1. Helen Schneider Hospital for Women, Rabin Medical Center, Petach Tikva; The Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel;
2. Tel Aviv Sourasky Medical Center, The Sackler Faculty of Medicine, Lis Maternity Hospital, Tel Aviv University, Tel Aviv, Israel;
3. Hillel Yaffe Medical Center, The Rappaport faculty of Medicine, Technion, Hadera, Haifa, Israel