American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2018 > 218 > 4 > 379-389
American Journal of Obstetrics and Gynecology > 2018 > 218 > 6 > 601.e1-601.e7
American Journal of Obstetrics and Gynecology > 2018 > 218 > 4 > 379-389
American Journal of Obstetrics and Gynecology > 2018 > 218 > 6 > 601.e1-601.e7