American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 1998 > 179 > 4 > 1038-1042
American Journal of Obstetrics and Gynecology > 2010 > 202 > 1 > 51.e1-51.e10
American Journal of Obstetrics and Gynecology > 1998 > 179 > 4 > 1038-1042
American Journal of Obstetrics and Gynecology > 2010 > 202 > 1 > 51.e1-51.e10