American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2014 > 210 > 4 > 325.e1-325.e10
American Journal of Obstetrics and Gynecology > 2014 > 211 > 4 > 385.e1-385.e9
American Journal of Obstetrics and Gynecology > 2014 > 211 > 5 > 524.e1-524.e8
American Journal of Obstetrics and Gynecology > 2014 > 211 > 6 > 665.e1-665.e7