American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2017 > 216 > 4 > 340-351
American Journal of Obstetrics and Gynecology > 2017 > 216 > 4 > 399.e1-399.e8
American Journal of Obstetrics and Gynecology > 2017 > 217 > 3 > 314-321
American Journal of Obstetrics and Gynecology > 2017 > 217 > 6 > 697.e1-697.e7