International Journal of Gynecology & Obstetrics
International Journal of Gynecology and Obstetrics > 1997 > 58 > 1 > 167-176
International Journal of Gynecology and Obstetrics > 1997 > 58 > 1 > 85-92
International Journal of Gynecology and Obstetrics > 1997 > 58 > 1 > 69-75
International Journal of Gynecology and Obstetrics > 1997 > 58 > 1 > 51-57