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American Journal of Obstetrics and Gynecology > 2008 > 198 > 4 > 382.e1-382.e8
American Journal of Obstetrics and Gynecology > 2008 > 198 > 4 > 428.e1-428.e6
American Journal of Obstetrics and Gynecology > 2008 > 198 > 4 > 382.e1-382.e8
American Journal of Obstetrics and Gynecology > 2008 > 198 > 4 > 428.e1-428.e6