A Youssef1, O Idris2, M G Dodaro1, I Badr2, G Di Donna1, R Kamel2. 1. Department of Obstetrics and Gynecology, Sant'Orsola Malpighi University Hospital, University of Bologna, Bologna, Italy. 2. Department of Obstetrics and Gynecology, Kasr Al-Ainy University Hospital, Cairo University, Cairo, Egypt.