American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2005 > 193 > 4 > 1526-1533
American Journal of Obstetrics and Gynecology > 2005 > 193 > 4 > 1561-1564
American Journal of Obstetrics and Gynecology > 2005 > 193 > 4 > 1526-1533
American Journal of Obstetrics and Gynecology > 2005 > 193 > 4 > 1561-1564