European Journal of Obstetrics & Gynecology and Reproductive Biology
European Journal of Obstetrics and Gynecology > 2006 > 126 > 1 > 27-32
European Journal of Obstetrics and Gynecology > 2006 > 129 > 2 > 124-127
European Journal of Obstetrics and Gynecology > 2006 > 129 > 2 > 140-144