Affiliation: | 1. The Division of Emergency Medicine Department of Medicine, University of Wisconsin School of Medicine and Public Health, , Madison, WI;2. The Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, , Madison, WI;3. The Department of Emergency Medicine, Johns Hopkins University School of Medicine, , Baltimore, MD;4. The Department of Emergency Medicine, Boston University School of Medicine, , Boston, MA;5. The Division of Emergency Medicine, Washington University in St. Louis, , St. Louis, MO;6. The Department of Emergency Medicine, George Washington University School of Medicine and Public Health, , Washington, DC;7. The Division of Emergency Medicine, Department of Surgery, Stanford University School of Medicine, , Palo Alto, CA;8. The Departments of Emergency Medicine and Internal Medicine, University of North Carolina School of Medicine, , Chapel Hill, NC |