International Journal of Gynecology & Obstetrics
International Journal of Gynecology and Obstetrics > 2007 > 98 > 2 > 168-171
International Journal of Gynecology and Obstetrics > 2012 > 119 > 3 > 253-256
International Journal of Gynecology and Obstetrics > 2014 > 127 > 3 > 288-292