American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2014 > 211 > 2 > 158.e1-158.e6
American Journal of Obstetrics and Gynecology > 2014 > 211 > 3 > 237.e1-237.e13
American Journal of Obstetrics and Gynecology > 2014 > 211 > 5 > 512.e1-512.e6
American Journal of Obstetrics and Gynecology > 2014 > 211 > 6 > 627.e1-627.e9