Breastfeeding Report Card-United States Available at Retrieved October 27, 2011
Centers for Disease Control and Prevention. Breastfeeding Report Card-United States, 2011. Available at: http://www. cdc.gov/breastfeeding/data/ reportcard.htm. Retrieved October 27, 2011.
Fertility regulation in nursing women: IV. Long-term influence of a low-dose combined oral contraceptive initiated at day 30 postpartum upon lactation and infant growth
Croxatto HB, Díaz S, Peralta O, Juez G, Herreros C, Casado ME, et al. Fertility regulation in nursing women: IV. Long-term influence of a low-dose combined oral contraceptive initiated at day 30 postpartum upon lactation and infant growth. Contraception 1983;27:13-25. (Pubitemid 13137472)
Effects of hormonal contraceptives on breast milk composition and infant growth
World Health Organization (WHO) Task Force on Oral Contraceptives
World Health Organization (WHO) Task Force on Oral Contraceptives. Effects of hormonal contraceptives on breast milk composition and infant growth. Stud Fam Plann 1988;19: 361-9.
Effect of progestin compared with combined oral contraceptive pills on lactation: A randomized controlled trial
Espey E, Ogburn T, Leeman L, Singh R, Schrader R. Effect of progestin compared with combined oral contraceptive pills on lactation: a randomized controlled trial. Obstet Gynecol 2012; 119:5-13.
Update to CDC's U.S. Medical Eligibility Criteria for Contraceptive Use Revised Recommendations for the Use of Contraceptive Methods During the Postpartum Period. Available at Retrieved October 27, 2011
Centers for Disease Control and Prevention. Update to CDC's U.S. Medical Eligibility Criteria for Contraceptive Use, 2010: Revised Recommendations for the Use of Contraceptive Methods During the Postpartum Period. Available at: http://www.cdc. gov/mmwr/preview/mmwrhtml/mm6026a3.htm#tab1. Retrieved October 27, 2011.