American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2011 > 204 > 1 > 74.e1-74.e8
American Journal of Obstetrics and Gynecology > 2011 > 204 > 3 > 232.e1-232.e6
American Journal of Obstetrics and Gynecology > 2011 > 204 > 6 > 531.e1-531.e7
American Journal of Obstetrics and Gynecology > 2011 > 205 > 2 > 121.e1-121.e5
American Journal of Obstetrics and Gynecology > 2011 > 205 > 3 > 230.e1-230.e5
American Journal of Obstetrics and Gynecology > 2011 > 205 > 5 > 496.e1-496.e5