American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2000 > 183 > 1 > 148-155
American Journal of Obstetrics and Gynecology > 2000 > 183 > 3 > 662-668
American Journal of Obstetrics and Gynecology > 2000 > 183 > 1 > 148-155
American Journal of Obstetrics and Gynecology > 2000 > 183 > 3 > 662-668