International Journal of Gynecology & Obstetrics
International Journal of Gynecology and Obstetrics > 2005 > 89 > Supplement 2 > S30-S37
International Journal of Gynecology and Obstetrics > 2008 > 103 > 3 > 232-236
International Journal of Gynecology and Obstetrics > 2011 > 114 > 3 > 268-272
International Journal of Gynecology and Obstetrics > 2012 > 118 > 2 > 97-102
International Journal of Gynecology and Obstetrics > 2015 > 129 > 1 > 62-66