[1] Ben Gurion Univ Negev, Fac Hlth Sci, Dept Epidemiol, Beer Sheva, Israel
[2] Johns Hopkins Preparedness & Emergency Response R, Baltimore, MD USA
[3] Johns Hopkins Bloomberg Sch Publ Hlth, Dept Environm Hlth Sci, Baltimore, MD USA
[4] Johns Hopkins Ctr Publ Hlth Preparedness, Baltimore, MD USA
[5] Johns Hopkins Bloomberg Sch Publ Hlth, Dept Biostat, Baltimore, MD USA
[6] Johns Hopkins Univ, Sch Med, Dept Emergency Med, Baltimore, MD USA
[7] Johns Hopkins Off Crit Event Preparedness & Respo, Baltimore, MD USA
[8] Johns Hopkins Univ, Sch Med, Dept Anesthesiol & Crit Care Med, Baltimore, MD 21205 USA
[9] Natl Naval Med Ctr, Dept Pediat, Bethesda, MD USA
[10] Johns Hopkins Univ Hosp, Off Emergency Management, Baltimore, MD 21287 USA