1. Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
2. Department of Obstetrics and Gynecology, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
3. The Medical School for International Health, Ben-Gurion University of the Negev, Beer-Sheva, Israel
4. Department of Epidemiology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
5. Division of Obstetrics & Gynecology, Maternity Department “D”, Soroka University Medical Center and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
6. Department of Obstetrics and Gynecology, School of Medicine, Wayne State University, Detroit, MI, USA