1. Department of Community Medicine and Epidemiology (W.S., O.B., H.S.R., G.R.), Haifa 34362, Israel
2. Carmel Medical Center, Clalit Health Services, and Bruce Rappaport Faculty of Medicine (W.S., O.B., H.S.R., G.R.), Technion-Israel Institute of Technology, Haifa 34362, Israel
3. Department of Internal Medicine C (W.S.), Ha'emek Medical Center, Afula 18101, Israel
4. Department of Epidemiology and Disease Prevention (G.R.), Office of the Chief Physician, Clalit Health Services Headquarters, Tel Aviv 62098, Israel