International Journal of Gynecology & Obstetrics
International Journal of Gynecology and Obstetrics > 2005 > 89 > Supplement 2 > S4-S12
International Journal of Gynecology and Obstetrics > 2007 > 98 > 2 > 168-171
International Journal of Gynecology and Obstetrics > 2012 > 118 > 2 > 107-111
International Journal of Gynecology & Obstetrics > 2015 > 128 > 1 > 23-26