International Journal of Gynecology & Obstetrics
International Journal of Gynecology and Obstetrics > 2012 > 116 > 2 > 128-133
International Journal of Gynecology and Obstetrics > 2012 > 118 > Supplement 2 > S78-S86
International Journal of Gynecology and Obstetrics > 2012 > 118 > Supplement 2 > S160-S166
International Journal of Gynecology and Obstetrics > 2012 > 118 > Supplement 2 > S87-S91