1. Boston University School of Medicine, Department of Emergency Medicine, Boston, Massachusetts Boston Medical Center, Department of Emergency Medicine, Boston, Massachusetts
2. Boston University School of Medicine, Department of Pediatric Infectious Diseases, Boston, Massachusetts
3. Boston Medical Center, Department of Emergency Medicine, Boston, Massachusetts
4. Boston University School of Public Health, Department of Biostatistics, Boston, Massachusetts
5. Boston University School of Medicine, Department of Emergency Medicine, Boston, Massachusetts