1. Department of Obstetrics & Gynecology, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
2. Department of Pathology, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
3. Epidemiology and Health Services Evaluation Department, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
4. Department of Obstetrics & Gynecology, Sheba Medical Center, Tel Hashomer and Sackler Faculty of Medicine, Tel-Aviv University, Ramat-Aviv, Israel