Interventions for emergency contraception

Cochrane Database of Systematic Reviews

Volumn 2019, Issue 1, 2019, Pages

  Shen, Jie ^a   Che, Yan ^a   Showell, Emily ^b   Chen, Ke ^a   Cheng, Linan ^a  

^a FUDAN UNIVERSITY   (China)

^b UNIVERSITY OF OTAGO   (New Zealand)

Author keywords

[No Author keywords available]

Indexed keywords

ESTRADIOL; LEVONORGESTREL; MIFEPRISTONE; ULIPRISTAL; POSTCOITUS CONTRACEPTIVE AGENT; PREGNANE DERIVATIVE;

ABDOMINAL PAIN; ADVERSE EVENT; CLINICAL EFFECTIVENESS; COMPARATIVE EFFECTIVENESS; DATA BASE; EMERGENCY CONTRACEPTION; HUMAN; INTERVENTION STUDY; MENSTRUATION; NAUSEA AND VOMITING; OUTCOME ASSESSMENT; PREGNANCY; PREGNANCY RATE; PRIORITY JOURNAL; RANDOMIZED CONTROLLED TRIAL (TOPIC); REVIEW; RISK FACTOR; SYSTEMATIC REVIEW; ADVERSE DEVICE EFFECT; COPPER INTRAUTERINE DEVICE; DRUG ADMINISTRATION; FEMALE; INTRAUTERINE CONTRACEPTIVE DEVICE; META ANALYSIS; PROCEDURES; UNSAFE SEX;

CONTRACEPTION, POSTCOITAL; CONTRACEPTIVES, POSTCOITAL; DRUG ADMINISTRATION SCHEDULE; ESTRADIOL; FEMALE; HUMANS; INTRAUTERINE DEVICES, COPPER; INTRAUTERINE DEVICES, MEDICATED; LEVONORGESTREL; MIFEPRISTONE; NORPREGNADIENES; PREGNANCY; PREGNANCY RATE; RANDOMIZED CONTROLLED TRIALS AS TOPIC; UNSAFE SEX;

EID: 85060385405     PISSN: None     EISSN: 1469493X     Source Type: Journal    
DOI: 10.1002/14651858.CD001324.pub6     Document Type: Review

References (256)

1. Arowojolu AO, Okewole LA, Adekunle AO. Comparative evaluation of the effectiveness and safety of two regimens of levonorgestrel for emergency contraception in Nigerians. Contraception 2002;66:269-73. 2674220
2. Ashok PW, Stalder C, Wagaarachchi PT, Flett GM, Melvin L, Templeton A. A randomised study comparing a low dose of mifepristone and the Yuzpe regimen for emergency contraception. BJOG 2002;109:553-60. 2674222
3. Askalani AH, Al-Senity AM, Al-Agizy HM, Salam HI, Al-Masry GI, El-Sadek SM. Evaluation of copper T-200 as a post-coital contraceptive. Egyptian Journal of Obstetrics and Gynaecology 1987;13:63-6. 2674224
4. Bu GY, Yang MY, Cao XL. Clinical study on administration of low dose of mifepristone and levonorgestrel in urgent postcoital contraception. Progress in Modern Biomedicine 2006;6(2):53-4. 2674226
5. Cao P, Li M, Xu J, Li Q. Different doses of mifepristone for emergency contraception. Journal of Practical Obstetrics and Gynecology 1999;15:295-6. 2674228
6. Cao YQ, Yang AH, Zhu XL. A comparative clinical study on mifepristone with levonorgestrel for emergency contraception. Chinese Journal of General Practice 2011;9(7):1087-8. 2674230
7. Carbonell JL, Garcia R, Gonzalez A. Mifepristone 5 mg versus 10 mg for emergency contraception: double-blinded randomized clinical trial. International Journal of Women's Health 2015;7:95-102. 6373172
8. Chen G. Mifepristone for emergency contraception. Journal of Guangxi Traditional Chinese Medical University 2001;4:22-4. 2674232
9. Chen R, Li Q, Zhang Y, Huang M, Chen Y, Zhong X, et al. A comparative study of low-dose mifepristone for emergency contraception. Shi Yong Yi Xue Zha Zi 2002;10:1028-9. 2674234
10. Chen H, Min X. Mifepristone in combination with MTX for emergency contraception. Strait Pharmaceutical Journal 2002;3:51-2. 2674236
11. Chen Y. A comparative study of mifepristone and LNG for emergency contraception. China Foreign Medical Treatment 2008;34:60. 2674238
12. Chen S, An HB, Wang D, Jin FB. Different dose of mifepristone for emergency contraception. China Health Care Nutrition - Clinical Medicine Journal 2009;2:28-9. 2674240
13. Chen SJ, Wen CX, Huang CX. A comparative study on mifepristone with levonorgestrel for emergency contraception. Chinese Journal of Ethnomedicine and Ethnopharmacy 2013;10:105. 2674242
14. Chen CX. A comparative study on mifepristone with levonorgestrel for emergency contraception. Medical Forums in Basic 2015;8:1024-5. 6373174
15. Cheng L, Tong CH, Xiao ZH. Low doses of mifepristone for emergency postcoital contraception. Chinese Journal of Obstetrics and Gynaecology 1999;6:335-8. 2674244
16. Cheng S. Clinical observation on YUTING for emergency contraception. Chinese Journal of Modern Drug Application 2009;8:147-8. 2674246
17. Creinin MD, Schlaff W, Archer DF, Wan L, Frezieres R, Tomas M, et al. Progesterone receptor modulator for emergency contraception. A randomized controlled trial. Obstetrics & Gynecology 2006;108:1089-97. 2674248
18. Dada OA, Godfrey EM, Piaggio G, von Hertzen H, Nigerian Network for Reproductive Health Research and Training. A randomized, double-blind, noninferiority study to compare two regimens of levonorgestrel for emergency contraception in Nigeria. Contraception 2010;82(4):373-8. 2674250
19. Ding G. Different doses of mifepristone for emergency contraception. Journal of Practical Diagnosis and Therapy 2005;19:226-7. 2674252
20. Dong JF. Two different methods for emergency contraception. Practical Clinical Journal of Integrated Traditional Chinese and Western Medicine 2009;9(1):58-9. 2674254
21. Du J. Low dose of mifepristone for emergency contraception. Henan Yi Yao Xin Xi 2002;11:14-5. 2674256
22. Ellertson C, Webb A, Blanchard K, Bigrigg A, Haskell S, Shochet T, et al. Modifying the Yuzpe regimen of emergency contraception: a multicenter randomized controlled trial. Obstetrics and Gynecology 2003;101:1160-7. 2674258
23. Fan H, Cheng Y, Guo F, Wu S, Tan Y, Chen X, et al. Low dose of mifepristone for emergency contraception. Hubei Yu Fang Yi Xue Zha Zi 2001;23:52. 2674260
24. Fang Q, Guo X, Pan J, Xiao J, Li Y. A comparative study on different doses of mifepristone for emergency contraception. Maternal and Child Health Care of China 2000;15:48-9. 2674262
25. Farajkhoda T, Khoshbin A, Enjezab B, Bokaei M, Karimi Zarchi M. Assessment of two emergency contraceptive regimens in Iran: levonorgestrel versus the Yuzpe. Niger Journal of Clinical Practice 2009;12(4):450-2. 2674264
26. Fu X, Wang L, Jiang Q, Yang X. Anordrin and mifepristone for emergency contraception. Journal of Qinghai Medical College 2000;21:43-4. 2674266
27. Gan XH, Jiang H, Li LP. A clinical study of low-dose mifepristone for emergency contraception. Modern Medicine Health 2007;23(11):1634-5. 2674268
28. Glasier A, Thong KJ, Dewar M, Mackie M, Baird D. Postcoital contraception with mifepristone (letter). Lancet 1991;337:1414-5. 2674270
29. Glasier A, Thong KJ, Dewar M, Mackie M, Baird DT. Mifepristone (RU 486) compared with high-dose estrogen and progestogen for emergency postcoital contraception. New England Journal of Medicine 1992;327:1041-4. 2674271
30. Glasier AF, Cameron ST, Fine PM, Logan SJ, Casale W, Van Horn J, et al. Ulipristal acetate versus levonorgestrel for emergency contraception: a randomised non-inferiority trial and meta-analysis. Lancet 2010;375(9714):555-62. 2674273
31. Hamoda H, Ashok PW, Stalder C, Flett GMM, Kennedy E, Templeton A. A randomized trial of mifepristone (10 mg) and levonorgestrel for emergency contraception. Obstetrics & Gynecology 2004;104:1307-13. 2674275
32. Han X, Weng L, Zhang L, Zeng T, Xiao B. Clinical trial of mifepristone and anordrin for emergency contraception. Journal of Reproductive Medicine (China) 1995;4:206-11. 2674277
33. Han X, Weng L, Xiao B. Emergency contraception with mifepristone and anordrin. Chinese Journal of Obstetrics and Gynecology 1996;9:526-9. 2674279
34. Han X, Jin X, Weng L. A comparative study of mifepristone with levonorgestrel for emergency contraception. Journal of Practical Obstetrics and Gynecology 1999;6:294-5. 2674281
35. Han L, Ma Y, Li H. Low doses of mifepristone for emergency contraception. Fudan University Journal of Medical Sciences 2001;2:176-7. 2674283
36. He CH, Gui YL, Yang J, Wang BS, Zheng E, Gao ES, et al. A randomized comparative study on mifepristone alone and in combination with tamoxifen for emergency contraception. Contraception 2002;66:221-4. 2674285
37. Ho PC, Kwan MSW. A prospective randomized comparison of levonorgestrel with the Yuzpe regimen in post-coital contraception. Human Reproduction 1993;8:389-92. 2674287
38. Hoseini FS, Eslami M, Abbasi M, Noroozi Fashkhami F, Besharati S. A randomized, controlled trial of levonorgestrel vs. the Yuzpe regimen as emergency contraception method among Iranian women. Iranian Journal of Public Health 2013;42(10):1158-66. 2674289
39. Hu X, Lu C. A comparative study of mifepristone with levonorgestrel for emergency contraception. Sichuan Medical Journal 2003;24(8):F004. 2674291
40. Jin YC, Jin YY. A comparative study on efficiency and side effects of mifepristone with levonorgestrel for emergency contraception. Seek Medical and Ask the Medicine 2012;10(2):167-8. 2674293
41. Lai Z, Wang J, Zhou Z, Lu H, Song X, Sun J. A comparative study of low-dose mifepristone for emergency contraception. Maternal and Child Health Care of China 2004;19(2):36-8. 2674295
42. Lan XL, Chen LP, Ye QH. Clinical study of low-dose mifepristone for emergency contraception. Clinical Medicine 2006;26(11):68-9. 2674297
43. Lei X, Yang G. A comparative observation on mifepristone with levonorgestrel for emergency contraception. Medical Information 2013;26(15):486. 2674299
44. Li A, Zhang Y. Low dose of mifepristone for emergency contraception. Journal of Guangxi Medical University 2000;17:857. 2674303
45. Li Q, Chen R, Zhang Y, Huang M, Chen RX, Zhong X. A comparative study of mifepristone 50 mg and 25 mg for emergency contraception [50mg. Guangdon Medical Journal 2000;22:884-5. 2674301
46. Li H, Chang JP, Li J. A study of low-dose mifepristone for emergency contraception. Heilongjiang Medical Journal 2000;23:90. 2674309
47. Li W. A comparative study of mifepristone with levonorgestrel for emergency contraception. Guizhou Journal of Medicine 2002;5:457. 2674323
48. Li J. A comparative study of mifepristone with levonorgestrel for emergency contraception. Anthology of Medicine 2005;5:754. 2674311
49. Liang JZ, Zhou MR. A randomised comparative study on mifepristone and levonorgestrel for emergency contraception. Heilongjiang Medical Journal 2001;25:594. 2674305
50. Liao AH, Chang CF, Zhu JW. Randomised controlled prospective studies of mifepristone in small doses and levonorgestrel for emergency contraception. Chinese Journal of Practical Gynaecology and Obstetrics 2003;19:25-7. 2674307
51. Lin N, Cheng W, Yang Y, Shao L. A comparative study of mifepristone and LNG for emergency contraception. Tianjing Medical Journal 2000;28:601-3. 2674313
52. Liu JL, Liu LH, Li KZ, Liu HL. Comparative study of the efficacy of low-dose mifepristone and levonorgestrel on the emergency contraception. Practical Preventive Medicine 2000;7:126-7. 2674315
53. Liu L, Wang Z, Li L. Mifepristone and anordrin for emergency contraception. Zhong Guo Yiu Sheng Yu Yi Chuan Zha Zi 2001;9:108-11. 2674317
54. Liu L, Chen A. A comparative study of mifepristone with Cu-IUD for emergency contraception. Journal of Changzhi Medical College 2002;61:198-9. 2674319
55. Liu RQ. A comparative study of mifepristone and LNG for emergency contraception. China Pharmaceuticals 2009;19:68-9. 2674321
56. Lou C. Low-dose mifepristone for emergency contraception. Xian Dai Shi Yong YI Xue 2002;14:485. 2674325
57. Lou X, Ma L, Yang Y. Mifepristone and C53 contraceptive in postcoital contraception. Journal of Chinese Modern Gynaecology and Obstetrics 2005;2:405-6. 2674327
58. Miras RG, Sanchez AG, Miras LG, Llibre Guerra JJ, de Jesus Delgado González M, Penalver Cruz AM. Mifepristone efficacy for emergency contraception when comparing 5 and 10 milligrams doses [Eficacia de la mifepristona como comtraceptivo de emergencia al comparar dosis de 5 y 10 miligramos]. Revista Cubana de Obstetricia y Ginecologia 2014;40(3):326-35. 2674329
59. Ngai SW, Fan S, Li S, Cheng L, Ding J, Jing X, et al. A randomized trial to compare 24 h versus 12 h double dose regimen of levonorgestrel for emergency contraception. Human Reproduction 2005;20:307-11. 2674331
60. Pei JH, Wang ZX. A randomised comparative study of mifepristone in small doses and levonorgestrel for emergency contraception. Haerbin Medicine 2001;21:32-3. 2674333
61. Qi Y, Zhang J, Cao Y, Zhang Z. A comparative clinical trial on two low doses of mifepristone for emergency contraception. Maternal and Child Health Care of China 2000;15:701-4. 2674335
62. Qi M, Wang Y, Yan L. A comparative study of low-dose mifepristone with levonorgestrel for emergency contraception - 288 cases report. Journal of Qinghai Medical College 2003;24:255-6. 2674339
63. Qian L. Three doses of mifepristone for emergency contraception. Chinese Journal of Family Planning 1999;7:322-3. 2674337
64. Rowlands S, Guillebaud J, Bounds W, Booth M. Side effects of danazol compared with an ethinyloestradiol/norgestrel combination when used for postcoital contraception. Contraception 1983;27:39-49. 2674341
65. Rowlands S, Kubba AA, Guillebaud J, Bounds W. A possible mechanism of action of danazol and an ethinylestradiol/norgestrel combination used as postcoital contraceptive agents. Contraception 1986;33:539-45. 2674342
66. Sang GW, Shao Q, Zhang J, Zhang M, Chen S, Song S, et al. A randomized multicentre clinical trial on different doses of mifepristone alone and in combination with anordrin as emergency contraception. Chinese Journal of Obstetrics and Gynaecology 1999;34(6):331-4. 2674344
67. Shao XY. Clinical observation on mifepristone for emergency contraception. Practical Clinical Journal of Integrated Traditional Chinese and Western Medicine 2010;10(3):55. 2674346
68. Sheng A. Clinical observation of the efficacy of mifepristone and levonorgestrel on the emergency contraception. Academic Journal of Jiangsu University (Medicine) 2002;12:246-9. 2674348
69. Sheng SY. A clinical study of LNG-COC for emergency contraception. Asia-Pacific Traditional Medicine 2008;4(9):93-4. 2674350
70. Su W, Chui JY, Liu P. A comparative study of IUCD with mifepristone and with levonorgestrel for emergency contraception. Journal of Baotou Medicine 2001;25:24. 2674352
71. Sun Y, Wang X. A clinical comparative study of mifepristone with levonorgestrel for emergency contraception. Chinese Journal of Family Planning 2000;8:172-3. 2674354
72. Sun P. Mifepristone for emergency contraception. Journal of Chinese Practice Medicine 2003;5:92. 2674358
73. Sun MX. A clinical comparative study of LNG vs. LNG-COC for emergency contraception. Chinese Journal of Family Planning 2007;15(6):366-7. 2674356
74. Tan K, Mai T, He P, Lin H, Li S. Low doses of mifepristone for emergency contraception. Chinese Journal of Family Planning 1999;7:470-1. 2674360
75. Tan L, Zheng G, Li J. Mifepristone for emergency contraception - 150 cases report [150. Health Vocational Education 2003;21:138-9. 2674362
76. Tao XL, Xiong J. A study on mifepristone for emergency contraception. Herald of Medicine 2014;33(6):742-3. 2674364
77. Tian ZM. A clinical comparative observation among copper IUD and mifepristone for emergency contraception [Cu-IUD. China Health Care & Nutrition 2013;9:5238. 2674366
78. Van Santen MR, Haspels AA. A comparison of high-dose estrogens versus low-dose ethinylestradiol and norgestrel combination in postcoital interception: a study in 493 women. Fertility and Sterility 1985;43:206-13. 2674370
79. Van Santen MR, Haspels AA. Comparative randomized double-blind study of high dosage ethinylestradiol versus ethinylestradiol and norgestrel combination in postcoital contraception. Acta Endocrinologica 1982;99(suppl 246):2. 2674371
80. von Hertzen H, Piaggio G, Ding J, Chen J, Song S, Bartfai G, et al. Low dose mifepristone and two regimens of levonorgestrel for emergency contraception. Lancet 2002;360:1803-10. 2674373
81. Wang Z, Liu L, Liu Q, Zhang H. A clinical comparative study of mifepristone with anordrin for emergency contraception. Chinese Journal of Family Planning 1999;7:320-1. 2674375
82. Wang C, Tian M, Chang Y, Shao M. A clinical comparative observation among copper IUD, lower dose mifepristone and levonorgestrel for emergency contraception. Journal of Chinese Physician 2000;2:271-3. 2674379
83. Wang Q, Li A. A comparative study of levonorgestrel with low dose mifepristone for emergency contraception. Northwestern Pharmaceutical Journal 2000;15:72. 2674385
84. Wang SZ, Huang ZK, Li S. Clinical trial of mifepristone in different dose for emergency contraception. Chinese Journal of Practical Gynaecology and Obstetrics 2001;9:534-6. 2674387
85. Wang Y, Liu H. A comparative study on low doses of mifepristone with levonorgestrel for emergency contraception. Chinese Journal of Family Planning 2003;8:505-6. 2674389
86. Wang L, Lv Y, Guan D, Zhang H, Yao L. 12.5 mg mifepristone for emergency contraception [12.5 mg. Chinese General Practice 2004;7:1477-8. 2674383
87. Wang J. A comparative study on different doses of mifepristone for emergency contraception. Journal Huaihai Medicine 2006;24:19-20. 2674381
88. Wang ZW, Qu HW. Two different doses of mifepristone for emergency contraception. Chinese Journal of Misdiagnosis 2008;20:4819-20. 2674391
89. Wang CL. A comparative clinical study on mifepristone with levonorgestrel for emergency contraception. Guide of China Medicine 2012;10(5):102-3. 2674377
90. Webb AM. Alternative treatments in oral postcoital contraception: interim results. Advances in Contraception 1991;7:271-9. 2674393
91. Webb AMC, Russell J, Elstein M. Comparison of Yuzpe regimen, danazol, and mifepristone (RU486) in oral postcoital contraception. BMJ 1992;305:927-31. 2674394
92. Wei RH. Low dose of mifepristone for emergency contraception - 200 cases report. Shanghai Sheng Wu Yi Xue Gong Cheng Zha Zi 2002;23:39-42. 2674398
93. Wei H, He CB, Liu J. Low dose mifepristone for emergency contraception. Chinese and Foreign Women Health 2011;19(3):70. 2674396
94. WHO Task Force on Postovulatory Methods of Fertility Regulation. Randomised controlled trial of levonorgestrel versus the Yuzpe regimen of combined oral contraceptives for emergency contraception. Lancet 1998;352:428-33. 2674400
95. WHO Task Force on Postovulatory Methods of Fertility Regulation. Comparison of three single doses of mifepristone as emergency contraception: a randomised trial. Lancet 1999;353:697-702. 2674402
96. Wu S, Wang C, Wang Y, Cheng W, Zuo S, Li H, et al. A randomized, double-blind, multicentre study on comparing levonorgestrel and mifepristone for emergency contraception. Chinese Journal of Obstetrics and Gynaecology 1999;34:327-30. 2674404
97. Wu XZ, Sao JY, Chen CQ, Yan Y, Fa YY, Liu JH, et al. A comparative study on methods for emergency contraception. Reproduction & Contraception (China) 2002;22:152-5. 2674406
98. Wu S, Dong J, Cong J, Wang CP, von Hertzen H, Godfrey EM. Gestrinone compared with mifepristone for emergency contraception: a randomized controlled trial. Obstetrics and Gynecology 2010;115(4):740-4. 2674408
99. Xiao BL, von Hertzen H, Piaggio G. A randomized double-blind comparison of two single doses of mifepristone for emergency contraception. Human Reproduction 2002;17:3084-9. 2674410
100. Xie X, Liu Y, Lin X. A clinical study on 600 cases of mifepristone for emergency contraception. Reproduction & Contraception (China) 1998;18:224-6. 2674412
101. Xie HH, Shang XM, Dai WY. Analysis of emergency contraception use mifepristone by different doses. Guide of China Medicine 2010;8(14):34-5. 2674414
102. Xu Z. A comparative study of mifepristone, anordrin and levonorgestrel for emergency contraception. Journal of Yichun Medical College 2000;12:248-9. 2674418
103. Xu L, Wang Z. A comparative study on low dose mifepristone with levonorgestrel for emergency contraception. Chinese Journal of Family Planning 2000;8:419-20. 2674416
104. Yang LJ. A comparative study on mifepristone, anordrin and danazol for emergency contraception. Guangzhou Medical Journal 2001;32:12-3. 2674420
105. Yang F. A comparative study on two low doses of mifepristone for emergency contraception. Journal of Clinical Research 2003;20:630-1. 2674422
106. Ye LQ. A study on the effect of mifepristone for emergency contraception. For all Health 2013;7(1):12-13. 2674424
107. Zeng XY. A clinical study of Mifepristone in combination with MTX for emergency contraception. Practical Clinical Journal of Integrated Chinese and Western Medicine 2007;7(3):62-3. 2674428
108. Zeng MY, Zhu LF, Huang Y. A comparative study of low-dose mifepristone for emergency contraception. International Medicine Health Guidance News 2008;14:68-70. 2674426
109. Zhang Y, Qiao G, Zhu P, Zhang S, Zhang J, Zhu N. Clinical observation of three lower doses of mifepristone for emergency contraception. Chinese Journal of Family Planning 1998;6:343-5. 2674440
110. Zhang X, Gao G, Shi J, Qu C, Leng Y. A clinical study on low doses of mifepristone for emergency contraception. Chinese Journal of Family Planning 1999;4:175-6. 2674438
111. Zhang JQ. Emergency contraception in high-land. Chinese Journal of Family Planning 2000;8:552-4. 2674434
112. Zhang Y, Zhang W, Wang L. Low-dose of mifepristone and anordrin for emergency contraception: observation of 116 cases. Journal of Qiqihar Medical College 2002;4:415. 2674444
113. Zhang Y, Wen L, Li S, Wang Y. Mifepristone for emergency contraception. Henan YI Yao Xin XI 2002;8:20-1. 2674442
114. Zhang L, Lai L, Deng X. Single and small dose of Mifepristone for emergency contraception of curative effect observe. Journal of Gannan Medical College 2005;3:328-30. 2674436
115. Zhang H. A comparative clinical study on mifepristone with levonorgestrel for emergency contraception. Guide of China Medicine 2012;10(26):576-7. 2674430
116. Zhang LR. A comparative clinical study on mifepristone with levonorgestrel for emergency contraception. Modern Healthcare 2014;7:67. 2674432
117. Zhao J, Liu R, Li H, Zhang Y. Different doses of mifepristone for emergency contraception. Journal of Shandong University (Health Sciences) 2003;41:468. 2674446
118. Zheng A. Low-dose of mifepristone for emergency contraception. Youjiang Medical Journal 2005;4:375-6. 2674448
119. Zuo SH, Wu J, Liu L, Liu J, Gao Y. A clinical trial on two low doses of mifepristone for emergency contraception. Reproduction & Contraception (China) 1999;6:352-6. 2674450
120. Ashok PW, Wagaarachchi PT, Flett GM, Templeton A. Mifepristone as a late post-coital contraceptive. Human Reproduction 2001;16:72-5. 2674452
121. Ashok PW, Hamoda H, Flett GMM, Templeton A. Mifepristone versus the Yuzpe regimen (PC4) for emergency contraception. International Journal of Gynecology and Obstetrics 2004;87:188-93. 2674454
122. Ban X, Xiao Y, Fan H, Liu G, Liu Q, Yu L. A comparative clinical study on Tcu380A and Cu-IUD for emergency contraception. Maternal & Child Health Care of China 2001;16:498-501. 2674456
123. Benagiano G, von Hertzen H. Towards more effective emergency contraception?. Lancet 2010;375(9714):527-28. 2674458
124. Brache V, Cochon L, Deniaud M, Croxatto HB. Ulipristal acetate prevents ovulation more effectively than levonorgestral: analysis of pooled data from three randomized trials of emergency contraception regimens. Contraception 2013;88(5):611-8. 2674460
125. Byamugisha JK, Mirembe FM, Faxelid E, Tumwesigye NM, Gemzell-Danielsson K. A randomized clinical trial of two emergency contraceptive pill regimens in a Ugandan population. Acta Obstetricia et Gynecologica 2010;89:670-6. 2674462
126. Chen QJ, Xiang WP, Zhang DK, et al. Efficacy and safety of a levonorgestrel enteric-coated tablet as an over-the-counter drug for emergency contraception: a Phase IV clinical trial. Human Reproduction (Oxford, England) 2011;26(9):2316-21. 2674466
127. Chen DY, Wang JL. A clinical observation on mifepristone and Yuzpe for emergency contraception. Chinese and Foreign Medical Research 2012;10(24):116-7. 2674464
128. Creinin MD. A reassessment of efficacy of the Yuzpe regimen of emergency contraception. Human Reproduction 1997;12:496-8. 2674468
129. D'Souza RE, Masters T, Bounds W, Guillebaud J. Randomised controlled trial assessing the acceptability of GyneFix versus Gyne-T389S for emergency contraception. Journal of Family Planning and Reproductive Health Care 2003;29:23-9. 2674470
130. Dixon GW. Ethinylestradiol and conjugated estrogens as postcoital contraceptives. JAMA 1980;244:1336-9. 2674472
131. Dong SZ, Wu SH. Comparing mifepristone, levonorgestrel and the copper IUD for emergency contraception: a report of 268 cases. Journal of Chinese Modern Gynecology and Obstetrics 4;2:127-9. 2674474
132. Ellertson C, Evans M, Ferden S, Leadbetter C, Spears A, Johnestone K, et al. Extending the time limit for starting the Yuzpe regimen of emergency contraception to 120 hours. Obstetrics & Gynecology 2003;101:1168-71. 2674476
133. Espinos JJ, Senosiain R, Vanrell C, Armengol J, Cuberas N, Calaf J. Safety and effectiveness of hormonal postcoital contraception: a prospective study. European Journal of Contraception and Reproductive Health Care 1999;4:27-33. 2674478
134. Fan Ai, Wang Y, Wang Z. Clinical study on 518 cases of emergency contraception. Chinese Journal of Family Planning 1998;6:408-9. 2674480
135. Fan H, Zhou L. Emergency contraception with Multiload Cu 375 SL IUD: a multicentre clinical trial. Journal of Reproductive Medicine (China) 2001;10:70-7. 2674482
136. Fasoli M, Parazzini F, Cecchetti G, Vecchia CL. Post-coital contraception: an overview of published studies. Contraception 1989;39:459-69. 2674484
137. Fine P, Mathe H, Ginde S, Cullins V, Morfesis J, Gainer E. Ulipristal acetate taken 48-120 hours after intercourse for emergency contraception. Obstetrics and Gynecology 2010;115(2):247-63. 2674486
138. Gan SH, Chang M, Hu S, Zhang P, Chang M, Xu X. A clinical study on mifepristone 10mg for emergency contraception. Reproduction and Contraception (China) 1999;19:311-3. 2674488
139. Gan SX, Li SS, Lu Y. Comparative study of the efficacy of mifepristone and levonorgestrel on the emergency contraception. Chinese Journal of Family Planning 2001;9:178-81. 2674490
140. Gao ER, Zhao Sh, Lou CH. Study on the acceptability of emergency contraception among those who underwent induced abortion. Reproduction & Contraception (China) 2001;21:104-9. 2674492
141. Glasier A. Can we identify women at risk of pregnancy despite using emergency contraception? Data from randomized trials of ulipristal acetate and levonorgestrel. Obstetrical and Gynecological Survey 2013;68(3):208-10. 2674494
142. Gottardi G, Marzi MM, Pozzi S. Postcoital estrogen or IUD? [Oestrogène postcoital ou DIU?]. IPPF Europe Bulletin d'Information Régional 1979;8:7-8. 2674496
143. Gottardi G, Spreafico A, de Orchi L. The postcoital IUD as an effective continuing contraceptive method. Contraception 1986;34:549-58. 2674498
144. Gu XY, Yie TF. Clinical study of the effect of Multiload 375 SL and levo-norgestrel on emergency contraception. Chinese Journal of Family Planning 2002;10:740-2. 2674502
145. Guillebaud J, Kubba A, Rowlands S, White J, Elder EG. Postcoital contraception with danazol, compared with an ethinyloestradiol-norgestrel combination or insertion of a intrauterine device. Journal of Obstetrics and Gynaecology 1983;suppl 1:s64-8. 2674500
146. Halpern V, Raymond EG, Lopez LM. Repeated use of pre- and postcoital hormonal contraception for prevention of pregnancy. Cochrane Database of Systematic Reviews 2010, Issue 1. [DOI: 10.1002/14651858.CD007595.pub2]2674504
147. Han X, Wong L, Sun J. A clinical study on mifepristone alone and in combination with anordrin for emergency contraception. Chinese Journal of Family Planning 1999;7:411-4. 2674506
148. Han Y. The clinical observation of GyneFix IUD for emergency contraception. Journal of Practical Obstetrics and Gynecology 2001;17:171-2. 2674508
149. Haspels AA. Interception: post-coital estrogens in 3016 women. Contraception 1976;14:375-81. 2674510
150. He C, Shi Y, Xu J, van Look PFA. A multicenter clinical study on two types of levonorgestrel tablets administered for postcoital contraception. International Journal of Gynecology and Obstetrics 1991;36:43-8. 2674512
151. Ho PC. Levonorgestrel (LNG)-development of hormonal methods of emergency contraception. European Journal of Contraception and Reproductive Health Care 2013;18:S44-45. 2674514
152. Hoffman KOK. Postcoital contraception: experiences with ethinyl oestradiol/norgestrel and levonorgestrel only. In: Harrison RF, Bonnar J, Thompson W editor(s). Fertility and Sterility. Dublin: IFFS Fertility and Sterility, 1983:311-6. 2674516
153. Jiang L, Duan Y, Sun Y. A comparative study of mifepristone with levonorgestrel for emergency contraception. Chinese Journal of Family Planning 2000;8:463-4. 2674518
154. Jiang DX, Wu ER. Effects of gestrinone (R2323) on emergency contraception: a clinical observation of 120 cases. Journal of Reproductive Medicine 2002;11:326-30. 2674520
155. Jin J, Weisberg E, Fraser IS. Comparison of three single doses of mifepristone as mifepristone as emergency contraception: a randomised controlled trial. Australian and New Zealand Journal of Obstetrics and Gynaecology 2005;45:489-94. 2674522
156. Kesserü E, Larranaga A, Parada J. Postcoital contraception with d-norgestrel. Contraception 1973;7:367-79. 2674524
157. Li XY, Hu LY. A study of low-dose mifepristone for emergency contraception. Chinese Journal of Practical Gynaecology and Obstetrics 2001;17:619-20. 2674536
158. Li F, Chen YX, Tang JH. Emergency contraception by low-dose mifepristone: observation of 150 cases. Journal of First Military Medical University 2002;22:466. 2674526
159. Li F, Qian X, Wu W. A comparative study of mifepristone with Cu-IUD for emergency contraception. Journal of Practice Medicine 2005;21:2313-4. 2674528
160. Lippes J, Malik T, Tatum HJ, Zielezny M. The postcoital copper-T. Advances in Planned Parenthood 1976;11:24-9. 2674530
161. Lippes J, Tatum HJ, Maulid D, Zielezny M. Postcoital copper IUD found to be effective in preventing pregnancy. Family Planning Perspectives 1979;11:195. 2674532
162. Liu Y, Chen X. A comparative study of mifepristone with Cu-IUD for emergency contraception. Journal of Qiqihar Medical College 2002;23:890-1. 2674534
163. Luerti M, Tonta A, Feria P, Molla R, Santini F. Post-coital contraception by estrogen-progestagen combination or IUD insertion. Contraception 1986;33:61-8. 2674538
164. Ma J. A study on 110 cases of emergency contraception. Chinese Journal of Practical Gynaecology and Obstetrics 2001;17:189. 2674540
165. Mo Y. A clinical observation on different dose of mifepristone for emergency contraception. Hainan Yi Xue 2004;15:42-3. 2674542
166. Mor E, Saadat P, Kives S, White E, Reid RL, Paulson RJ, et al. Comparison of vaginal and oral administration of emergency contraception. Fertility and Sterility 2005;84:40-5. 2674544
167. Moreau C, Trussell J. Results from pooled phase III studies of ulipristal scetate for emergency contraception. Contraception 2012;86:673-80. 2674546
168. Piaggio G, Heng Z, von Hertzen H, Bilian X, Linan C. Combined estimates of effectiveness of mifepristone 10mg in emergency contraception. Contraception 2003;68:439-46. 2674548
169. Piaggio G, von Hertzen H, Zhao H, Xiao BL, Cheng L. Meta-analyses of randomized trials comparing different doses of mifepristone in emergency contraception. Contraception 2003;68:447-52. 2674550
170. Polakow FS. Levonorgestrel used for emergency contraception during lactation-A prospective observational cohort study on maternal and infant safety. Journal of Maternal-Fetal and Neonatal Medicine 2013;26(3):219-21. 2674552
171. Qi Y, Zhang J, Cao Y, Yan W, Zhang Z. A clinical study on mifepristone at low dose for emergency contraception. Chinese Journal of Family Planning 2000;8:305-7. 2674554
172. Qiao Y. A clinical trial of mifepristone in combination with MTX for emergency contraception. Journal of Jining Medical College 2002;25:44. 2674556
173. Qin C. A clinical study on 137 cases of emergency contraception with mifepristone. Zhejiang Journal of Clinical Medicine 2000;2:302-3. 2674558
174. Raymond EG, Creinin MD, Barnhart KT, Lovvorn AE, Rountree RE, Trussell J. Meclizine for prevention of nausea associated with use of emergency contraceptive pills: a randomized trial. Obstetrics and Gynecology 2000;95:271-7. 2674560
175. Raymond EG, Stewart F, Weaver M, Monteith C, van Der Pol B. Impact of increased access to emergency contraceptive pills. Obstetrics and Gynecology 2006;108(5):1098-106. 2674562
176. Roye CF. Routine provision of emergency contraception to teens and subsequent condom use: a preliminary study. Journal of Adolescent Health 2001;28:165-6. 2674564
177. Ruan JH. A clinical observation on LNG for emergency contraception. China Medicine and Pharmacy 2012;2(18):80-1. 2674566
178. Scarduelli C, Anselmino M, Caccamo A, Sezzi E, Lombroso Finzi GC. Emergency contraception: a new evaluation of effectiveness. P-159. Abstracts of the 14th Annual Meeting of the ESHRF, Göteborg. 1998:208-9. 2674568
179. Schilling LH. An alternative to the use of high dose estrogen for postcoital contraception. Journal of American College of Health Association 1979;27:247-9. 2674570
180. Schreiber CA, Ratcliffe SJ, Barnhart KT. A randomized controlled trial of the effect of advanced supply of emergency contraception in postpartum teens: a feasibility study. Contraception 2010;81:435-40. 2674572
181. Scott LJ. Ulipristal acetate: a guide to its use in emergency contraception. Drugs and Therapy Perspectives 2012;28(2):6-9. 2674574
182. Shaaban OM, Hassen SG, Nour SA, et al. Emergency contraceptive pills as a backup for lactational amenorrhea method (LAM) of contraception: a randomized controlled trial. Contraception 2013;87:363-369. 2674576
183. Shen HX. A observational study of mifepristone for emergency contraception. Journal of China Traditional Chinese Medicine Information 2010;2(28):163. 2674578
184. Shochet T, Blanchard K, King H, Henchcliffe B, Hunt J. Side effects of the Yuzpe regimen of emergency contraception and modifications. Contraception 2004;69:301-7. 2674580
185. Song ZH, Wang Y, Chen P, Wang D, Lu WH. A clinical study of mifepristone and the copper IUD for emergency contraception. Chinese Medicine of Factory and Mine 2007;20(6):630-1. 2674582
186. Sun Y, Che Y, Ding Y, Zhou W, Han Y, Fang K, et al. Systematic review of emergency contraception. Chinese Journal of Family Planning 2005;4:217-22. 2674584
187. Tian Q. A comparative study of mifepristone with Cu-IUD for emergency contraception. Journal of Henan Medical College for Staff and Workers 2000;12:51. 2674586
188. Turok DK, Gurtcheff SE, Handley E, Simonsen SE, Sok C, Murphy P. A pilot study of the copper T380A IUD and oral levonorgestrel for emergency contraception. Contraception 2010;82:520-5. 2674588
189. Turok DK, Jacobson JC, Dermish AI, Simonsen SE, Gurtcheff S, McFadden M, et al. Emergency contraception with a copper ICD or oral levonorgestrel: an observational study of 1-year pregnancy rates. Contraception 2014;89(2014):222-8. 6373175
190. Turok DK, Sanders JN, Thompson IS. Preference for and efficacy of oral levonorgestrel for emergency contraception with concomitant placement of a levonorgestrel IUD: a prospective cohort study. Contraception 2016;93(6):526-32. 6373177
191. Van Santen MR, Haspels AA. Postcoital contraception with an IUD [Contraccezione con D.I.U. post-coitale]. Contraccezione, Fertilita, Sessualita 1983;10:549-57. 2674590
192. Van Santen MR, Haspels AA. Interception II: postcoital low-dose estrogens and norgestrel combination in 633 women. Contraception 1985;31:275-93. 2674592
193. Virjo I, Kirkkola AL, Isokoski M, Mattila K. Use and knowledge of hormonal emergency contraception. Advances in Contraception 1999;15:85-94. 2674594
194. Wang CP, Liu Y, Chang YF, Shao WQ. A comparing study of the copper intrauterine device and low dose of mifepristone for emergency contraception. Journal of Reproductive Medicine 2006;15(4):271-3. 2674596
195. Wei R. Low-dose of mifepristone for emergency contraception: observation of 309 cases. Jiangxi Medical Journal 2002;37:102-4. 2674598
196. Wu C, Zhang Y. An extend study on using single dose of mifepriston 25mg for emergency contraception. Chinese Journal of Family Planning 1999;7:358-60. 2674600
197. Wu S, Zhou Y. Clinical use of emergency contraception pill. Chinese Journal of Practical Gynaecology and Obstetrics 2005;21:15-7. 2674602
198. Xiao BL. Clinical study of emergency contraception with low-dose mifepristone. Chinese Journal of Obstetrics and Gynecology 2004;39:35-8. 2674604
199. Yang Y, Liang X, Liu X. Low-dose of mifepristone for emergency contraception: observation of 106 cases. Heilongjiang Medical Journal 2002;26:283. 2674606
200. Ye JM. A clinical observation on LNG for emergency contraception. Chinese journal of ethnomedicine and ethnopharmacy 2014;9:75. 2674608
201. Yu MD. A primary discussion of the drugs for emergency contraception. Anhui Medical and Pharmaceutical Journal 2001;5:95-6. 2674610
202. Yuzpe AA, Thurlow HJ, Ramzy I, Leushon JL. Postcoital contraception - a pilot study. Journal of Reproductive Medicine 1974;1:53-8. 2674612
203. Yuzpe AA, Lancee WJ. Ethinylestradiol and dl-norgestrel as a postcoital contraceptive. Fertility and Sterility 1977;28:932-6. 2674614
204. Yuzpe AA, Percival Smith R, Rademaker AW. A multicentre clinical investigation employing ethinylestradiol combined with dl-norgestrel as a postcoital contraceptive agent. Fertility and Sterility 1982;37:508-13. 2674616
205. Zhang J, Jing X, Wong L. Cu-IUD versus mifepristone for emergency contraception. Chinese Journal of Obstetrics and Gynecology 1999;34:569-70. 2674618
206. Zhang M, Yang H, Wang Z, Liang X, Wang Y. A study on mifepristone alone and in combination with anordrin for emergency contraception. Zhejiang Journal of Practical Medicine 1999;4:1-2. 2674620
207. Zhang X, Du M, Ying Y. A study on mifepristone alone and in combination with anordrin for emergency contraception. Reproduction and Contraception (China) 1999;19:163-8. 2674622
208. Zhang X, Leng Y, Shi J, Gao G, Xu Y, Sun H. A study on LNG for emergency contraception. Chinese Journal of Family Planning 1999;7:375-6. 2674624
209. Zho H, Han L. Analysis of the reason for failure of emergency contraception. Journal of China-Japan Friendship Hospital 2006;20:207-10. 2674626
210. Zhao H, Tang JR, Wu MH, Cheng H. A comparative study of mifepristone with IUCD for emergency contraception. Journal of Capital University of Medical Sciences 2001;22:273-4. 2674628
211. Zhu P, Chai J, Wang N, Li G. An initial observation of mifepristone combined with MTX for the use of emergency contraception. Guangdong Journal of Medicine 1999;20:11-2. 2674630
212. Zhu YH, Ou YL. Clinical observational study of three methods for emergency contraception. Journal of Medical Theory and Practice 2007;20(2):200-2. 2674632
213. Colombo UF, Zuliani G, Benzi G, Bregozzo T, Viezzoli T. [Contraccezione post coitale ormonale con danazolo: ristati di due differenti schemi posologici]. Pediatric and Adolescent Gynaecology. Paper presented at the III European Symposium on Pediatric and Adolescent Gynaecology; 1987 Oct 7-10; Florence. Florence, Italy: CIC Edizioni Internazionali, 1987:206-11. 2674634
214. Zuliani G, Colombo UF, Luerti M, Casolati E, Viezzoli T. Postcoital contraception with an ethinylestradiol-norgestrel combination and two different danazol regimens. In: Genazzani AR, Petraglia F, Volpe A, Facchinetti F editor(s). Recent Research on Gynecological Endocrinology. New Jersey: Parthenon Publishing, 1988. 2674635
215. Zuliani G, Colombo UF, Molla R. Hormonal postcoital contraception with an ethinylestradiol-norgestrel combination and two danazol regimens. European Journal of Obstetrics Gynecology and Reproductive Biology 1990;37:253-60. 2674637
216. Zuliani G, Colombo UF, Molla R, Bregozzo T, Mojana G. [Confronto tra danazolo e etinilestradiolo-norgestrel utilzzati come intercettori post-coitali ormonali: studio clinico randomizzato]. Congresso Internazionale di Endocrinologia Ginecologica. Madonna di Campiglio, 1986 16-22 Mar, Bologna. 1986:341-4. 2674636
217. NCT01539720. Levonorgestrel intrauterine system for emergency contraception (LIFE). clinicaltrials.gov/show/NCT01539720 first received: 21 February, 2012. 6373179
218. NCT02175030. RAPID EC - RCT assessing pregnancy with intrauterine devices for EC. clinicaltrials.gov/show/NCT02175030 first received: 23 June, 2014. 6373181
219. NCT02577601. Impact of combined hormonal contraceptives on UPA. clinicaltrials.gov/show/NCT02577601 first received: 5 August, 2015. 6373183
220. Baird DT, Cameron S, Evers JLH, Gemzell-Danielsson K, Glasier A, Moreau C, et al. Emergency contraception. Widely available and effective but disappointing as a public health intervention: a review. Hum Reprod 2015;30(4):751-60.
221. Cleland K, Zhu H, Goldstuck N, Cheng L, Trussell J. The efficacy of intrauterine devices for emergency contraception: a systematic review of 35 years of experience. Hum Reprod 2012;27:1994-2000.
222. Deeks JJ, Higgins JPT, Altman DG (editors). Chapter 9: Analysing data and undertaking meta-analyses. In: Higgins JPT, Green S (editors). Cochrane Handbook for Systematic Reviews of Interventions Version 5.1.0 (updated March 2011). The Cochrane Collaboration, 2011. Available from handbook.cochrane.org.
223. Edelman AB, Cherala G, Blue SW, Erikson DW, Jensen JT. Impact of obesity on the pharmacokinetics of levonorgestrel-based emergency contraception: single and double dosing. Contraception 2016;94:52-7.
224. Fine P, Mathe H, Ginde S, Cullins V, Morfesis J, Gainer E. Ulipristal acetate taken 48-120 hours after intercourse for emergency contraception. Obstet Gynecol 2010;115:257-63.
225. Gemzell-Danielsson K, Marions L. Mechanisms of action of mifepristone and levonorgestrel when used for emergency contraception. Hum Reprod Update 2004;10:341-8.
226. Gemzell-Danielsson K, Kardos L, von Hertzen H. Impact of bodyweight/body mass index on the effectiveness of emergency contraception with levonorgestrel: a pooled-analysis of three randomized controlled trials. Curr Med Res Opin 2015;31:2241-8.
227. Glasier A. Emergency postcoital contraception. New England Journal of Medicine 1997;337:1058-64.
228. Glasier A, Cameron ST, Blithe D, Scherrer B, Mathe H, Levy D, et al. Can we identify women at risk of pregnancy despite using emergency contraception? Data from randomized trials of ulipristal acetate and levonorgestrel. Contraception 2011;84:363-7.
229. GRADE Working Group, McMaster University. GRADEpro GDT. Version accessed 15 March 2017. Hamilton (ON): GRADE Working Group, McMaster University, 2014.
230. Grimes DA. Emergency contraception: expanding opportunities for primary prevention. New England Journal of Medicine 1997;337:1078-9.
231. Guyatt GH, Oxman AD, Kunz R, Brozek J, Alonso-Coello P, Rind D, et al. GRADE guidelines 6. Rating the quality of evidence - imprecision. Journal of Clinical Epidemiology 2011;64(12):1283-93.
232. Higgins JPT, Thompson SG, Deeks JJ, Altman DG. Measuring inconsistency in meta-analyses. BMJ 2003;327:557-60.
233. Higgins JPT, Altman DG, Sterne JAC (editors). Chapter 8: Assessing risk of bias in included studies. In: Higgins JPT, Green S (editors). Cochrane Handbook for Systematic Reviews of Interventions Version 5.1.0 (updated March 2011). The Cochrane Collaboration, 2011. Available from handbook.cochrane.org.
234. International Consortium for Emergency Contraception (ICEC). Knowledge and ever used of emergency contraception in Latin America. www.cecinfo.org/custom-content/uploads/UserFiles/File/DHS/Emergency%20Contraception%20in%20Latin%20America.pdf (Posted on April 25, 2011).
235. ICEC. Knowledge and ever used of emergency contraception in Africa. www.cecinfo.org/custom-content/uploads/UserFiles/File/DHS/Emergency%20Contraception%20in%20Africa.pdf (Posted on April 25, 2011).
236. ICEC. Knowledge and ever used of emergency contraception in Europe and West Asia. www.cecinfo.org/custom-content/uploads/UserFiles/File/DHS/Emergency%20Contraception%20in%20Europe%20and%20West%20Asia.pdf (Posted on April 25, 2011).
237. Instituto Nacional De Estadística E Informática (INEI) and ICF Macro. Peru: DHS, 2010 - Final report continuous (2010). ORC Macro / Measure DHS+, May 2011.
238. Jatlaoui TC, Curtis KM. Safety and effectiveness data for emergency contraceptive pills among women with obesity: a systematic review. Contraception 2016;94:605-11.
239. Jatlaoui TC. Safety data for levonorgestrel, ulipristal acetate and Yuzpe regimens for emergency contraception. Contraception 93;2:93-112.
240. Kapp N, Abitbol JL, Mathe H, Scherrer B, Guillard H, Gainer E, et al. Effect of body weight and BMI on the efficacy of levonorgestrel emergency contraception. Contraception 2015;91(2):97-104.
241. Lalitkumar PGL. Emergency contraception. Best Practice and Research: Clinical Endocrinology and Metabolism 27;1:91-101.
242. Lefebvre C, Manheimer E, Glanville J. Chapter 6: Searching for studies. In: Higgins JPT, Green S (editors). Cochrane Handbook for Systematic Reviews of Interventions Version 5.1.0 (updated March 2011). The Cochrane Collaboration, 2011. Available from handbook.cochrane.org.
243. Milosavljevic J. Mechanism of action, efficacy and safety of emergency hormonal contraception (levonorgestrel and ulipristal acetate) and attitudes of pharmacists. Acta Facultatis Medicae Naissensis 31;3:155-61.
244. Mozzanega B. Ulipristal acetate: critical review about endometrial and ovulatory effects in emergency contraception. Reproductive Sciences 21;6:678-85.
245. Palermo T, Bleck J, Westley E. Knowledge and use of emergency contraception: a multicountry analysis. International Perspectives on Sexual and Reproductive Health 2014;40(2):79-86. [DOI: 10.1363/4007914]
246. Nordic Cochrane Centre, The Cochrane Collabortion. Review Manager 5 (RevMan 5). Version 5.3. Copenhagen: Nordic Cochrane Centre, The Cochrane Collabortion, 2014.
247. Sedgh G, Singh S, Shah IH, Ahman E, Henshaw SK, Bankole A. Induced abortion: incidence and trends worldwide from 1995 to 2008. Lancet 2012;379(9816):625-32.
248. Sedgh G, Singh S, Hussain R. Intended and unintended pregnancies worldwide in 2012 and recent trends. Studies in Family Planning 2014;45(3):301-14.
249. Shohel M, Rahman MM, Zaman A, Uddin MMN, Al-Amin MM, Reza HM. A systematic review of effectiveness and safety of different regimens of levonorgestrel oral tablets for emergency contraception. BMC Women's Health 14;1:54.
250. Trussell J, Raymond EG. Emergency contraception: a last chance to prevent unwanted pregnancy. April 2012. ec.princeton.edu/questions/ec-review.pdf (accessed 3 June 2012).
251. Van Look PFA, von Hertzen H. Emergency contraception. British Medical Bulletin 1993;49:158-70.
252. Webb A. Emergency contraception. Fertility Control Reviews 1995;4:3-7.
253. Cheng L, Gülmezoglu M, Ezcurra E, Van Look PFA. Interventions for emergency contraception. Cochrane Database of Systematic Reviews 1999, Issue 7. [DOI: 10.1002/14651858.CD001324.pub4]
254. Cheng L, Gülmezoglu M, Van Oel CJ, Piaggio G, Ezcurra E, Van Look PFA. Interventions for emergency contraception. Cochrane Database of Systematic Reviews 2004, Issue 7. [DOI: 10.1002/14651858.CD001324.pub4]
255. Cheng L, Gülmezoglu M, Piaggio GP, Ezcurra E, Van Look PFA. Interventions for emergency contraception. Cochrane Database of Systematic Reviews 2008, Issue 4. [DOI: 10.1002/14651858.CD001324.pub4]
256. Cheng L, Che Y, Gülmezoglu AM. Interventions for emergency contraception. Cochrane Database of Systematic Reviews 2012, Issue 8. [DOI: 10.1002/14651858.CD001324.pub4]