American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2017 > 216 > 3 > 285.e1-285.e6
American Journal of Obstetrics and Gynecology > 2017 > 216 > 5 > 521.e1-521.e13
American Journal of Obstetrics and Gynecology > 2017 > 216 > 6 > 606.e1-606.e10