1. Department of Obstetrics and Gynecology; Wolfson Medical Center; Holon Israel
2. Helen Schneider Hospital for Women, Rabin Medical Center - Beilinson Hospital, Petach Tikva; and Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
3. Antenatal Diagnostic Unit, Department of Obstetrics and Gynecology, The Haim Sheba Medical Center and Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
4. Department of pathology; Rabin Medical Center; Petah Tikva Israel
5. Department of Obstetrics and Gynecology; Shaare Zedek Medical Center; Jerusalem Israel