1. Clinical Research Center, Soroka University Medical Center, Ben-Gurion University of the Negev, Be'er Sheva, Israel
2. Department of Emergency Medicine, University of Massachusetts Medical School, Worcester
3. Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts
4. Department of Health Care Policy, Harvard Medical School, Boston, Massachusetts
5. Division of General Internal, Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts
6. Department of Psychological and Brain Sciences, University of Massachusetts, Amherst