European Journal of Obstetrics & Gynecology and Reproductive Biology
European Journal of Obstetrics and Gynecology > 2011 > 156 > 1 > 67-71
European Journal of Obstetrics and Gynecology > 2011 > 156 > 2 > 181-185
European Journal of Obstetrics and Gynecology > 2011 > 156 > 1 > 67-71
European Journal of Obstetrics and Gynecology > 2011 > 156 > 2 > 181-185