1. Department of Epidemiology, Biostatistics and Community Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
2. Community Medical Services Division, Clalit Health Services, Tel Aviv, Israel.
3. Branch of Planning and Strategy, Clalit Health Services, Tel Aviv, Israel.
4. Department of Family Medicine the Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv, Israel.
5. Department of Family Medicine, Central District, Clalit Health Services, Rehovot, Israel.