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Volumn 39, Issue 4, 2005, Pages 361-369

Hair pulling: A review

Author keywords

Abnormal behaviour; Barbering; Cats; Dogs; Guineapigs; Hair pulling; Mice; Primates; Rabbits; Review; Sheep; Trichotillomania; Wool pulling

Indexed keywords

CLOMIPRAMINE; DIAZEPAM; NALTREXONE; PHENOBARBITAL;

EID: 27644552209     PISSN: 00236772     EISSN: None     Source Type: Journal    
DOI: 10.1258/002367705774286448     Document Type: Review
Times cited : (56)

References (97)
  • 2
    • 0004999809 scopus 로고
    • Long-term effects of a natural foraging task on aggression and stereotypies in socially housed pigtail macaques
    • Boccia ML (1989) Long-term effects of a natural foraging task on aggression and stereotypies in socially housed pigtail macaques. Laboratory Primate Newsletter 28, 18-19
    • (1989) Laboratory Primate Newsletter , vol.28 , pp. 18-19
    • Boccia, M.L.1
  • 3
    • 0346489956 scopus 로고    scopus 로고
    • A foraging task reduces agonistic and Stereotypic behaviours in pigtail macaque social groups
    • Boccia ML, Hijazi AS (1998) A foraging task reduces agonistic and Stereotypic behaviours in pigtail macaque social groups. Laboratory Primate Newsletter 37, 1-5
    • (1998) Laboratory Primate Newsletter , vol.37 , pp. 1-5
    • Boccia, M.L.1    Hijazi, A.S.2
  • 4
    • 3242720835 scopus 로고    scopus 로고
    • Comfortable quarters for rabbits in research institutions
    • (Reinhardt V, Reinhardt A, eds). Washington, DC: Animal Welfare Institute
    • Boers K, Gray G, Love J, et al. (2002) Comfortable quarters for rabbits in research institutions. In: Comfortable Quarters for Laboratory Animals. 9th edn. (Reinhardt V, Reinhardt A, eds). Washington, DC: Animal Welfare Institute, 44-50
    • (2002) Comfortable Quarters for Laboratory Animals. 9th Edn. , pp. 44-50
    • Boers, K.1    Gray, G.2    Love, J.3
  • 5
    • 0038826478 scopus 로고    scopus 로고
    • The relationship of violence and trichotillomania
    • Boughn S, Holdom JJ (2003) The relationship of violence and trichotillomania. Journal of Nursing Scholarship 35, 165-70
    • (2003) Journal of Nursing Scholarship , vol.35 , pp. 165-170
    • Boughn, S.1    Holdom, J.J.2
  • 6
    • 0031662831 scopus 로고    scopus 로고
    • Trichobezoars in trichotillomania: Case report and literature overview
    • Bouwer C, Stein DJ (1998) Trichobezoars in trichotillomania: case report and literature overview. Psychosomatic Medicine 60, 658-60
    • (1998) Psychosomatic Medicine , vol.60 , pp. 658-660
    • Bouwer, C.1    Stein, D.J.2
  • 7
    • 77953353786 scopus 로고    scopus 로고
    • Behavioural and environmental enrichment of individually housed chimpanzees
    • (Brent L, ed). San Antonio, TX: The American Society of Primatologists
    • Brent L (2001) Behavioural and environmental enrichment of individually housed chimpanzees. In: Special Topics in Primatology. Volume 2 - The Care and Management of Captive Chimpanzees (Brent L, ed). San Antonio, TX: The American Society of Primatologists, 146-71
    • (2001) Special Topics in Primatology. Volume 2 - The Care and Management of Captive Chimpanzees , vol.2 , pp. 146-171
    • Brent, L.1
  • 8
    • 0016843768 scopus 로고
    • Trichophagie - Eine verhaltens-störung bei kaninchen
    • Brummer H (1975) Trichophagie - eine Verhaltens-störung bei Kaninchen. Deutsche Tierärztliche Wochenschrift 82, 350-1
    • (1975) Deutsche Tierärztliche Wochenschrift , vol.82 , pp. 350-351
    • Brummer, H.1
  • 9
    • 27644488105 scopus 로고    scopus 로고
    • Primate housing facilities for pharmaceutical research in Switzerland (an example)
    • Bürge T, Panoussis B, Weber H (1997) Primate housing facilities for pharmaceutical research in Switzerland (an example). Primate Report 49, 19-22
    • (1997) Primate Report , vol.49 , pp. 19-22
    • Bürge, T.1    Panoussis, B.2    Weber, H.3
  • 11
    • 0033816458 scopus 로고    scopus 로고
    • Psychosocial issues for women with trichotillomania
    • Casati J, Toner BB, Yu B (2000) Psychosocial issues for women with trichotillomania. Comprehensive Psychiatry 41, 344-51
    • (2000) Comprehensive Psychiatry , vol.41 , pp. 344-351
    • Casati, J.1    Toner, B.B.2    Yu, B.3
  • 13
    • 0002231086 scopus 로고
    • Trichotillomania - From prevalence to comorbidity
    • Christenson GA (1995) Trichotillomania - from prevalence to comorbidity. Psychiatric Times 12, 44-8
    • (1995) Psychiatric Times , vol.12 , pp. 44-48
    • Christenson, G.A.1
  • 15
    • 0002087481 scopus 로고    scopus 로고
    • Trichotillomania: Descriptive characteristics and phenomenology
    • (Stein DJ, Christenson GA, Hollander E, eds). Washington, DC: American Psychiatric Press
    • Christenson GA, Mansueto CS (1999) Trichotillomania: descriptive characteristics and phenomenology. In: Trichotillomania (Stein DJ, Christenson GA, Hollander E, eds). Washington, DC: American Psychiatric Press, 1-41
    • (1999) Trichotillomania , pp. 1-41
    • Christenson, G.A.1    Mansueto, C.S.2
  • 16
    • 0028999169 scopus 로고
    • Clinical profile, comorbidity, and treatment history in 123 hair pullers: A survey study
    • Cohen LJ, Stein DJ, Simeon D, et al. (1995) Clinical profile, comorbidity, and treatment history in 123 hair pullers: a survey study. Journal of Clinical Psychiatry 56, 319-26
    • (1995) Journal of Clinical Psychiatry , vol.56 , pp. 319-326
    • Cohen, L.J.1    Stein, D.J.2    Simeon, D.3
  • 17
    • 0006724190 scopus 로고
    • Bezoars and concretions
    • DeBakey M, Ochsner A (1938) Bezoars and concretions. Surgery 4, 934-63
    • (1938) Surgery , vol.4 , pp. 934-963
    • DeBakey, M.1    Ochsner, A.2
  • 18
    • 0012289133 scopus 로고    scopus 로고
    • Environmental enrichment: Does it reduce barbering in mice?
    • DeLuca AM (1997) Environmental enrichment: does it reduce barbering in mice? AWIC Newsletter 8, 7-8
    • (1997) AWIC Newsletter , vol.8 , pp. 7-8
    • Deluca, A.M.1
  • 19
    • 0343002026 scopus 로고
    • Pharmocological treatment of behavioural problems in cats
    • Dodman NH (1994) Pharmocological treatment of behavioural problems in cats. Veterinary International 4, 13-20
    • (1994) Veterinary International , vol.4 , pp. 13-20
    • Dodman, N.H.1
  • 21
    • 27644444616 scopus 로고
    • Baboon behaviour under crowded conditions
    • (Erwin J, Maple T, Mitchell G, eds). New York, NY: Van Nostrand Reinhold
    • Elton RH (1979) Baboon behaviour under crowded conditions. In: Captivity and Behaviour (Erwin J, Maple T, Mitchell G, eds). New York, NY: Van Nostrand Reinhold, 125-39
    • (1979) Captivity and Behaviour , pp. 125-139
    • Elton, R.H.1
  • 25
    • 0020817985 scopus 로고
    • Hair pulling (trichotillomania)
    • Galski T (1983) Hair pulling (trichotillomania). Psychoanalytic Review 70, 331-46
    • (1983) Psychoanalytic Review , vol.70 , pp. 331-346
    • Galski, T.1
  • 26
    • 2342568771 scopus 로고    scopus 로고
    • Why every scientist should care about animal welfare: Abnormal repetitive behaviour and brain function in captive animals
    • New Orleans, Eouisiana
    • Garner J (2002) Why every scientist should care about animal welfare: abnormal repetitive behaviour and brain function in captive animals. Fourth World Congress on Alternatives and Animal Use in the Life Sciences - Program and Abstracts, New Orleans, Eouisiana, 95
    • (2002) Fourth World Congress on Alternatives and Animal Use in the Life Sciences - Program and Abstracts , pp. 95
    • Garner, J.1
  • 27
    • 7044228206 scopus 로고    scopus 로고
    • Social and husbandry factors affecting the prevalence and severity of barbering ('whisker trimming') by laboratory mice
    • Garner JP, Dufour B, Gregg EE, Weisker SM, Mench JA (2004b) Social and husbandry factors affecting the prevalence and severity of barbering ('whisker trimming') by laboratory mice. Applied Animal Behaviour Science 89, 263-82
    • (2004) Applied Animal Behaviour Science , vol.89 , pp. 263-282
    • Garner, J.P.1    Dufour, B.2    Gregg, E.E.3    Weisker, S.M.4    Mench, J.A.5
  • 28
    • 7044256023 scopus 로고    scopus 로고
    • Barbering (whisker trimming) in laboratory mice involves the same brain systems as compulsive behaviours in trichotillomania, autism and other obsessive-compulsive spectrum disorders
    • (Ferrante V, ed). Abano Terme, Italy: Fondazione Iniziative Zooprofilattiche e Zootecniche, 75
    • Garner JP, Wayne CM, Würbel H, Mench JA (2003) Barbering (whisker trimming) in laboratory mice involves the same brain systems as compulsive behaviours in trichotillomania, autism and other obsessive-compulsive spectrum disorders. In: Proceedings of the 37th International Congress of the International Society for Applied Ethology (Ferrante V, ed). Abano Terme, Italy: Fondazione Iniziative Zooprofilattiche e Zootecniche, 75
    • (2003) Proceedings of the 37th International Congress of the International Society for Applied Ethology
    • Garner, J.P.1    Wayne, C.M.2    Würbel, H.3    Mench, J.A.4
  • 29
    • 2342471363 scopus 로고    scopus 로고
    • Barbering (fur and whisker trimming) by laboratory mice as a model of human trichotillomania and obsessive-compulsive spectrum disorders
    • Garner JP, Weisker SM, Dufour B, Mench JA (2004a) Barbering (fur and whisker trimming) by laboratory mice as a model of human trichotillomania and obsessive-compulsive spectrum disorders. Comparative Medicine 54, 216-24
    • (2004) Comparative Medicine , vol.54 , pp. 216-224
    • Garner, J.P.1    Weisker, S.M.2    Dufour, B.3    Mench, J.A.4
  • 30
    • 21844451859 scopus 로고    scopus 로고
    • The application, use, and effects of training and enrichment variables with Japanese snow macaques (Macaca fuscata) at the Central Park Wildlife Center
    • Goodwin J (1997) The application, use, and effects of training and enrichment variables with Japanese snow macaques (Macaca fuscata) at the Central Park Wildlife Center. American Zoo and Aquarium Association (AZA) Regional Conference Proceedings, 510-15
    • (1997) American Zoo and Aquarium Association (AZA) Regional Conference Proceedings , pp. 510-515
    • Goodwin, J.1
  • 33
    • 0000725680 scopus 로고
    • Inventory of the behaviour of New Zealand white rabbits in laboratory cages
    • Gunn D, Morton DB (1995) Inventory of the behaviour of New Zealand white rabbits in laboratory cages. Applied Animal Behaviour Science 45, 277-92
    • (1995) Applied Animal Behaviour Science , vol.45 , pp. 277-292
    • Gunn, D.1    Morton, D.B.2
  • 36
    • 0001800738 scopus 로고
    • Behaviour
    • (Wagner JE, Manning PJ, eds). New York, NY: Academic Press
    • Harper LV (1976) Behaviour. In: The Biology of the Guinea Pig (Wagner JE, Manning PJ, eds). New York, NY: Academic Press, 31-51
    • (1976) The Biology of the Guinea Pig , pp. 31-51
    • Harper, L.V.1
  • 38
    • 27644476894 scopus 로고
    • Why cats overgroom
    • May 1995
    • Hetts S, Estep DQ (1995) Why cats overgroom. Cat Fancy 47-51 (May 1995)
    • (1995) Cat Fancy , pp. 47-51
    • Hetts, S.1    Estep, D.Q.2
  • 40
    • 27644455037 scopus 로고    scopus 로고
    • Environmental enrichment program for squirrel monkeys (Saimiri sciureus and Saimiri boliviensis) in captivity
    • Iglesias D, Gil-Burmann C (2002) Environmental enrichment program for squirrel monkeys (Saimiri sciureus and Saimiri boliviensis) in captivity. Folia Primatologica 73, 291
    • (2002) Folia Primatologica , vol.73 , pp. 291
    • Iglesias, D.1    Gil-Burmann, C.2
  • 42
    • 0026433206 scopus 로고
    • Intestinal stasis and rupture in rabbits
    • Jackson G (1991) Intestinal stasis and rupture in rabbits. Veterinary Record 129, 287-9
    • (1991) Veterinary Record , vol.129 , pp. 287-289
    • Jackson, G.1
  • 43
    • 0029935626 scopus 로고    scopus 로고
    • The diagnosis and psychopharmacological treatment of trichotillomania: A review
    • Jaspers JP (1996) The diagnosis and psychopharmacological treatment of trichotillomania: a review. Pharmacopsychiatry 29, 115-20
    • (1996) Pharmacopsychiatry , vol.29 , pp. 115-120
    • Jaspers, J.P.1
  • 46
    • 0033042770 scopus 로고    scopus 로고
    • Under-diagnosed psychiatric syndrome. I: Trichotillomania
    • Ko SM (1999) Under-diagnosed psychiatric syndrome. I: Trichotillomania. Annales of the Academy of Medicine Singapore 28, 279-81
    • (1999) Annales of the Academy of Medicine Singapore , vol.28 , pp. 279-281
    • Ko, S.M.1
  • 48
    • 0003262168 scopus 로고
    • Biology and disease of rabbits
    • (Fox JG, Cohen BJ, Loew FM, eds). Orlando, FL: Academic Press
    • Kraus AL, Weisbroth SH, Flatt RE (1994) Biology and disease of rabbits. In: Laboratory Animal Medicine (Fox JG, Cohen BJ, Loew FM, eds). Orlando, FL: Academic Press, 207-40
    • (1994) Laboratory Animal Medicine , pp. 207-240
    • Kraus, A.L.1    Weisbroth, S.H.2    Flatt, R.E.3
  • 49
    • 0021257744 scopus 로고
    • MAO inhibitor therapy in trichotillomania associated with depression: Case report
    • Krishnan KRR, Davidson JRT, Miller R (1984) MAO inhibitor therapy in trichotillomania associated with depression: case report. Journal of Clinical Psychiatry 45, 267-8
    • (1984) Journal of Clinical Psychiatry , vol.45 , pp. 267-268
    • Krishnan, K.R.R.1    Davidson, J.R.T.2    Miller, R.3
  • 50
    • 0026601707 scopus 로고
    • Vibrissaeless mutant rats with a modular representation of innervated sinus hair follicles in the cerebral cortex
    • Kuljis RO (1992) Vibrissaeless mutant rats with a modular representation of innervated sinus hair follicles in the cerebral cortex. Experimental Neurology 115, 146-50
    • (1992) Experimental Neurology , vol.115 , pp. 146-150
    • Kuljis, R.O.1
  • 53
    • 0015291192 scopus 로고
    • Hair-nibbling and whisker-trimming as indicators of social hierarchy in mice
    • Long SY (1972) Hair-nibbling and whisker-trimming as indicators of social hierarchy in mice. Animal Behaviour 20, 10-2
    • (1972) Animal Behaviour , vol.20 , pp. 10-12
    • Long, S.Y.1
  • 54
    • 0003162333 scopus 로고    scopus 로고
    • Abnormal behaviour in singly-housed Macaca mulatta: Prevalence and potential risk factors
    • Lutz CK, Chase WK, Novak MA (2000) Abnormal behaviour in singly-housed Macaca mulatta: prevalence and potential risk factors. American Journal of Primatology 51 (suppl. 1), 71
    • (2000) American Journal of Primatology , vol.51 , Issue.SUPPL. 1 , pp. 71
    • Lutz, C.K.1    Chase, W.K.2    Novak, M.A.3
  • 56
    • 0009413421 scopus 로고
    • Influence of the number of fryer rabbits per cage on their performance
    • Maertens L, DeGroote G (1984) Influence of the number of fryer rabbits per cage on their performance. Journal of Applied Rabbit Research 7, 151-5
    • (1984) Journal of Applied Rabbit Research , vol.7 , pp. 151-155
    • Maertens, L.1    DeGroote, G.2
  • 58
    • 84972034317 scopus 로고
    • A note on the behaviour of individually-penned sheep regarding their use for research purposes
    • Marsden MD, Wood-Gush DGM (1986) A note on the behaviour of individually-penned sheep regarding their use for research purposes. Animal Production 42, 157-9
    • (1986) Animal Production , vol.42 , pp. 157-159
    • Marsden, M.D.1    Wood-Gush, D.G.M.2
  • 62
    • 21344461376 scopus 로고    scopus 로고
    • Medikamenöse Behandlung der akralen Leckdermatitis des Hundes
    • Mertens PA, Dodman NH (1996) Medikamenöse Behandlung der akralen Leckdermatitis des Hundes. Kleintierpraxis 41, 327-37
    • (1996) Kleintierpraxis , vol.41 , pp. 327-337
    • Mertens, P.A.1    Dodman, N.H.2
  • 63
    • 0001782972 scopus 로고    scopus 로고
    • Veterinary models of compulsive self-grooming: Parallels with trichotillomania
    • (Stein DJ, Christenson GA, Hollander E, eds). Washington, DC: American Psychiatric Press
    • Moon-Fanelli AA, Dodman NH, O'Sullivan RL (1999) Veterinary models of compulsive self-grooming: parallels with trichotillomania. In: Trichotillomania (Stein DJ, Christenson GA, Hollander E, eds). Washington, DC: American Psychiatric Press, 63-92
    • (1999) Trichotillomania , pp. 63-92
    • Moon-Fanelli, A.A.1    Dodman, N.H.2    O'Sullivan, R.L.3
  • 66
    • 0032955221 scopus 로고    scopus 로고
    • Variables influencing the origins of diverse abnormal behaviours in a large sample of captive chimpanzees Pan troglodytes}
    • Nash LT, Fritz J, Alford PA, Brent L (1999) Variables influencing the origins of diverse abnormal behaviours in a large sample of captive chimpanzees (Pan troglodytes}. American Journal of Primatology 48, 15-29
    • (1999) American Journal of Primatology , vol.48 , pp. 15-29
    • Nash, L.T.1    Fritz, J.2    Alford, P.A.3    Brent, L.4
  • 67
    • 27644588660 scopus 로고    scopus 로고
    • Alexandria, VA: National Mental Health Association
    • National Mental Health Association (2005) Fact Sheet Trichotillomania. Alexandria, VA: National Mental Health Association
    • (2005) Fact Sheet Trichotillomania
  • 70
    • 0026875485 scopus 로고
    • Trichobezoar - A condition to think of in case of mobile abdominal mass
    • Qureshi NH, Morris K, McDevitt B (1992) Trichobezoar - a condition to think of in case of mobile abdominal mass. Irish Medical Journal 85, 74
    • (1992) Irish Medical Journal , vol.85 , pp. 74
    • Qureshi, N.H.1    Morris, K.2    McDevitt, B.3
  • 72
    • 0020862672 scopus 로고
    • Behavioural assessment in muskox calves
    • Reinhardt V, Flood PF (1983) Behavioural assessment in muskox calves. Behaviour 87, 1-21
    • (1983) Behaviour , vol.87 , pp. 1-21
    • Reinhardt, V.1    Flood, P.F.2
  • 77
    • 0028593388 scopus 로고
    • The demography, phenomenolgy, and family history of 22 persons with compulsive hair pulling
    • Schlosser S, Black DW, Blum N (1994) The demography, phenomenolgy, and family history of 22 persons with compulsive hair pulling. Annals of Clinical Psychiatry 6, 147-52
    • (1994) Annals of Clinical Psychiatry , vol.6 , pp. 147-152
    • Schlosser, S.1    Black, D.W.2    Blum, N.3
  • 78
    • 27644523542 scopus 로고
    • The case of the missing hair
    • Seaman WB (1971) The case of the missing hair. Hospital Practice 6, 146-7
    • (1971) Hospital Practice , vol.6 , pp. 146-147
    • Seaman, W.B.1
  • 80
    • 27644462949 scopus 로고    scopus 로고
    • Use of a shredded paper substrate to ameliorate abnormal self-directed behaviour of a chimpanzee (Pan troglodytes)
    • Smith K, St Claire M, Shaver C, Olexa P (2004) Use of a shredded paper substrate to ameliorate abnormal self-directed behaviour of a chimpanzee (Pan troglodytes). American Journal of Primatology 62, 94-5
    • (2004) American Journal of Primatology , vol.62 , pp. 94-95
    • Smith, K.1    St. Claire, M.2    Shaver, C.3    Olexa, P.4
  • 83
    • 1242271416 scopus 로고
    • Effects of enriched food acquisition on activity budgets of two tamarin species at Adelaide Zoo
    • Steen Z (1995) Effects of enriched food acquisition on activity budgets of two tamarin species at Adelaide Zoo. International Zoo News 42, 284-98
    • (1995) International Zoo News , vol.42 , pp. 284-298
    • Steen, Z.1
  • 86
    • 0029085215 scopus 로고
    • A long-term, double-blind, placebo-controlled crossover trial of the efficacy of fluoxetine for trichotillomania
    • Streichenwein SM, Thornby JI (1995) A long-term, double-blind, placebo-controlled crossover trial of the efficacy of fluoxetine for trichotillomania. American Journal of Psychiatry 152, 1192-6
    • (1995) American Journal of Psychiatry , vol.152 , pp. 1192-1196
    • Streichenwein, S.M.1    Thornby, J.I.2
  • 89
    • 27644544849 scopus 로고    scopus 로고
    • Rotational use of a recreational cage for the environmental enrichment of Japanese macaques (Macaca fuscata)
    • Tustin GW, Williams LE, Brady AG (1996) Rotational use of a recreational cage for the environmental enrichment of Japanese macaques (Macaca fuscata). Laboratory Primate Newsletter 35, 5-7
    • (1996) Laboratory Primate Newsletter , vol.35 , pp. 5-7
    • Tustin, G.W.1    Williams, L.E.2    Brady, A.G.3
  • 90
    • 0027264541 scopus 로고
    • Whisker trimming behaviour in A2G mice is not prevented by offering means of withdrawal from it
    • Van den Broek FAR, Omtzigt CM, Beynen AC (1993) Whisker trimming behaviour in A2G mice is not prevented by offering means of withdrawal from it. Laboratory Animals 27, 270-2
    • (1993) Laboratory Animals , vol.27 , pp. 270-272
    • Van Den Broek, F.A.R.1    Omtzigt, C.M.2    Beynen, A.C.3
  • 92
    • 0014249763 scopus 로고
    • The Rapunzel syndrome. An unusual complication of intestinal bezoar
    • Vaughhan Jr ED, Sawyers JL, Scott Jr HW (1968) The Rapunzel syndrome. An unusual complication of intestinal bezoar. Surgery 63, 339-43
    • (1968) Surgery , vol.63 , pp. 339-343
    • Vaughhan Jr., E.D.1    Sawyers, J.L.2    Scott Jr., H.W.3
  • 93
    • 0032511757 scopus 로고    scopus 로고
    • Increased number and size of dendritic spines in ipsilateral barrel field cortex following unilateral whisker trimming in postnatal rats
    • Vees AM, Micheava KD, Beaulieu C, Descarriers L (1998) Increased number and size of dendritic spines in ipsilateral barrel field cortex following unilateral whisker trimming in postnatal rats. Journal of Comparative Neurology 400, 110-24
    • (1998) Journal of Comparative Neurology , vol.400 , pp. 110-124
    • Vees, A.M.1    Micheava, K.D.2    Beaulieu, C.3    Descarriers, L.4
  • 95
  • 96
    • 3042948916 scopus 로고
    • Effect of an enrichment device on Stereotypic and self-aggressive behaviours in singly-caged macaques: A pilot study
    • Watson LM (1992) Effect of an enrichment device on Stereotypic and self-aggressive behaviours in singly-caged macaques: a pilot study. Laboratory Primate Newsletter 31, 8-10
    • (1992) Laboratory Primate Newsletter , vol.31 , pp. 8-10
    • Watson, L.M.1


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