American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2018 > 218 > 1 > 134.e1-134.e8
American Journal of Obstetrics and Gynecology > 2018 > 218 > 2(S) > S803-S817
American Journal of Obstetrics and Gynecology > 2018 > 218 > 2(S) > S774-S782.e21