1. Medical School, National and Kapodistrian University of Athens; Assisted Reproduction Unit, 3rd Department of Obstetrics and Gynaecology; Attikon University Hospital Rimini 1 Athens Chaidari Greece 12462
2. Medical School, National and Kapodistrian University of Athens; 75 M. Assias Street Goudi Athens Greece 115 27
3. University of Athens; 3rd Department of Obstetrics and Gynecology; 'Attikon' Hospital, Chaidari Athens Greece