American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2017 > 216 > 1 > 71.e1-71.e16
American Journal of Obstetrics and Gynecology > 2017 > 216 > 1 > 44.e1-44.e6
American Journal of Obstetrics and Gynecology > 2017 > 216 > 3 > 278.e1-278.e5
American Journal of Obstetrics and Gynecology > 2017 > 216 > 3 > 256.e1-256.e4
American Journal of Obstetrics and Gynecology > 2017 > 217 > 3 > 322.e1-322.e4