1. Prenatal Diagnostic Unit, Department of Obstetrics and Gynecology, Chaim Sheba Medical Center, Tel Hashomer, affiliated with the Sackler Faculty of Medicine; Tel-Aviv University; Tel-Aviv Israel
2. Ultrasound Unit, Department of Obstetrics and Gynecology, Rabin Medical Center, affiliated with the Sackler Faculty of Medicine; Tel-Aviv University; Tel-Aviv Israel