1. Department of Family Medicine, Sial Family Medicine and Primary Care Research Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
2. Community Pediatric Service, Kedumim Family Health Center, Clalit Health Services, Lev Shomron, Israel.
3. Elon Moreh Clinic, Clalit Health Services, Lev Shomron, Israel.
4. Department of Physiology and Cell Biology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.