American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2017 > 216 > 1 > 60.e1-60.e17
American Journal of Obstetrics and Gynecology > 2017 > 216 > 6 > 602.e1-602.e21
American Journal of Obstetrics and Gynecology > 2017 > 217 > 5 > 592.e1-592.e17
American Journal of Obstetrics and Gynecology > 2017 > 217 > 6 > 693.e1-693.e16