International Journal of Gynecology & Obstetrics
International Journal of Gynecology and Obstetrics > 2006 > 94 > 3 > 310-316
International Journal of Gynecology and Obstetrics > 2010 > 110 > 2 > 163-166
International Journal of Gynecology and Obstetrics > 2012 > 118 > 1 > 83-86