1. Giuseppe Benagiano, Department of Gynecology & Obstetrics, Sapienza, University of Rome, Rome, Italy, Tel.: +39 06 490 398, Fax: +39 06 4997 2544,
2. Sabina Carrara, Department of Gynecology & Obstetrics, Sapienza, University of Rome, Rome, Italy, Tel.: +3906 490 398, Fax: +3906 4997 2544,
3. Ivo Brosens, Leuven Institute for Fertility & Embryology, Leuven, Belgium, Tel.: +32 16407 514, Fax: +32 16407 514,