American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2005 > 193 > 4 > 1312-1322
American Journal of Obstetrics and Gynecology > 2005 > 193 > 4 > 1292-1301
American Journal of Obstetrics and Gynecology > 2005 > 193 > 4 > 1312-1322
American Journal of Obstetrics and Gynecology > 2005 > 193 > 4 > 1292-1301