European Journal of Obstetrics & Gynecology and Reproductive Biology
European Journal of Obstetrics and Gynecology > 2013 > 170 > 1 > 152-156
European Journal of Obstetrics and Gynecology > 2013 > 170 > 2 > 497-500
European Journal of Obstetrics and Gynecology > 2013 > 170 > 1 > 152-156
European Journal of Obstetrics and Gynecology > 2013 > 170 > 2 > 497-500