European Journal of Obstetrics & Gynecology and Reproductive Biology
European Journal of Obstetrics & Gynecology and Reproductive Biology > 1995 > 61 > 2 > 171-173
European Journal of Obstetrics & Gynecology and Reproductive Biology > 1995 > 62 > 1 > 127-130
European Journal of Obstetrics & Gynecology and Reproductive Biology > 1996 > 65 > 1 > 141-143