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 > 5 > 527.e1-527.e9
American Journal of Obstetrics and Gynecology > 2017 > 216 > 6 > 596.e1-596.e5