1 Department of Public Health, Ben-Gurion University of the Negev, Beer-Sheva, Israel; Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel; Clalit Health Services (Southern District), Beer-Sheva, Israel.
2 Department of Public Health, Ben-Gurion University of the Negev, Beer-Sheva, Israel; Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
3 Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel; The Motherisk Israel and Maccabi Health Services, Tel Aviv, Israel.
4 Department of Obstetrics and Gynecology, Ben-Gurion University of the Negev, Beer-Sheva, Israel; Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel; Soroka Medical Center, Beer-Sheva, Israel.