American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2018 > 218 > 2(S) > S762-S773
American Journal of Obstetrics and Gynecology > 2018 > 218 > 2(S) > S609-S618
American Journal of Obstetrics and Gynecology > 2018 > 218 > 2(S) > S692-S699
American Journal of Obstetrics and Gynecology > 2018 > 218 > 2(S) > S725-S737
American Journal of Obstetrics and Gynecology > 2018 > 218 > 5 > 525.e1-525.e9