1. a Department of Epidemiology, University of Michigan, Ann Arbor, MI, United States
2. b School of Public Health, Faculty of Health Sciences, Ben-Gurion University of the Negev, Be'er Sheva, Israel
3. c PREPARED Center for Emergency Response Research, Be'er Sheva, Israel
4. d The Galilee Society for Health Research & Services, Rikaz Data Bank, Shefa-amer, Israel