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European Journal of Obstetrics and Gynecology > 2006 > 128 > 1-2 > 50-53
American Journal of Obstetrics and Gynecology > 1999 > 180 > 1 > 112-113
European Journal of Obstetrics and Gynecology > 2006 > 128 > 1-2 > 50-53
American Journal of Obstetrics and Gynecology > 1999 > 180 > 1 > 112-113