Raoul Orvieto1, Neri Laufer2. 1. Department of Obstetrics and Gynecology, Chaim Sheba Medical Center (Tel Hashomer), Ramat Gan, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel. 2. Department of Obstetrics and Gynecology, Hadassah Hebrew University Medical Centers, Jerusalem, Israel; Hebrew University, Jerusalem, Israel.