American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 1996 > 174 > 3 > 1056-1060
American Journal of Obstetrics and Gynecology > 1996 > 174 > 5 > 1631-1636
American Journal of Obstetrics and Gynecology > 1996 > 174 > 3 > 1056-1060
American Journal of Obstetrics and Gynecology > 1996 > 174 > 5 > 1631-1636