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Fertility and Sterility > 2011 > 95 > 6 > 2131-2133
American Journal of Obstetrics and Gynecology > 2006 > 194 > 1 > 86-91
Fertility and Sterility > 2011 > 95 > 6 > 2131-2133
American Journal of Obstetrics and Gynecology > 2006 > 194 > 1 > 86-91