1. Department of Neonatology, Bnai-Zion Medical Center, Haifa, Israel
2. Obstetrics and Gynecology, Lady Davis Carmel Medical Center, Haifa, Israel
3. Ruth and Bruce Rappaport Faculty of Medicine, Technion Israel Institute of Technology, Haifa, Israel
4. Gertner Institute for Health Policy and Epidemiology, Tel Hashomer, Israel
5. Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel