American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2017 > 216 > 2 > 185.e1-185.e10
American Journal of Obstetrics and Gynecology > 2017 > 217 > 5 > 590.e1-590.e9
American Journal of Obstetrics and Gynecology > 2017 > 217 > 6 > 687.e1-687.e6