International Journal of Gynecology & Obstetrics
International Journal of Gynecology and Obstetrics > 2015 > 128 > 3 > 220-223
International Journal of Gynecology and Obstetrics > 2015 > 129 > 2 > 98-103
International Journal of Gynecology and Obstetrics > 2015 > 130 > 1 > 40-44
International Journal of Gynecology and Obstetrics > 2015 > 131 > Supplement 1 > S53-S55