American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2018 > 218 > 2 > 211-218
American Journal of Obstetrics and Gynecology > 2018 > 218 > 5 > 517.e1-517.e12
American Journal of Obstetrics and Gynecology > 2018 > 218 > 2 > 211-218
American Journal of Obstetrics and Gynecology > 2018 > 218 > 5 > 517.e1-517.e12