1. Department of Obstetrics and Gynecology, Sheba Medical Center; Tel-Hashomer, Tel-Aviv University; Tel-Aviv; Israel
2. Department of Obstetrics and Gynecology; Wolfson Medical Center, Tel-Aviv University; Tel-Aviv; Israel
3. Department of Obstetrics and Gynecology; Hadassah Medical Center; Jerusalem; Israel
4. Department of Radiology, Sheba Medical Center; Tel-Hashomer, Tel-Aviv University; Tel-Aviv; Israel