American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2005 > 193 > 4 > 1382-1383
American Journal of Obstetrics and Gynecology > 2005 > 193 > 4 > 1331-1337
American Journal of Obstetrics and Gynecology > 2005 > 193 > 4 > 1382-1383
American Journal of Obstetrics and Gynecology > 2005 > 193 > 4 > 1331-1337