1. Department of Obstetrics and Gynecology, Shaare Zedek Medical Center, Hebrew University School of Medicine, Jerusalem, Israel.
2. Department of Obstetrics and Gynecology, Hadassah University Hospital, Hebrew University School of Medicine, Jerusalem, Israel.
3. Department of Obstetrics and Gynecology, Yitzhak Shamir Medical Center (formerly Assaf Harofeh Medical Center), Zerifin, affiliated with the Sackler School of Medicine, Tel Aviv University, Israel.