American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2017 > 216 > 1 > 69.e1-69.e7
American Journal of Obstetrics and Gynecology > 2017 > 216 > 3 > 264.e1-264.e7
American Journal of Obstetrics and Gynecology > 2017 > 216 > 4 > 386.e1-386.e5
American Journal of Obstetrics and Gynecology > 2017 > 216 > 6 > 576-579.e1