International Journal of Gynecology & Obstetrics
International Journal of Gynecology and Obstetrics > 2015 > 128 > 3 > 224-227
International Journal of Gynecology and Obstetrics > 2015 > 129 > 2 > 98-103
International Journal of Gynecology and Obstetrics > 2015 > 131 > Supplement 1 > S56-S59