Affiliation: | 1. Department of Emergency Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD 21209, USA;2. Division of Infectious Diseases, The Johns Hopkins University School of Medicine, Baltimore, MD 21209, USA;3. Department of Emergency Medicine, Denver Health Medical Center, Denver, CO, USA;4. Department of Emergency Medicine, University of Colorado School of Medicine, Aurora, CO, USA;5. Department of Epidemiology, Colorado School of Public Health, Aurora, CO, USA |