| Institution: | 1. Department of Emergency Medicine, St Luke's–Roosevelt Hospital Center, New York, New York USA;2. Division of Emergency Medicine, Medical University of South Carolina, Charleston, South Carolina USA;3. Division of Pediatric Emergency Medicine, Boston Medical Center, Boston, Massachusetts USA;4. Department of Emergency Medicine, George Washington University, Washington, DC USA;5. Department of Emergency Medicine, Hospital of the University of Pennsylvania;6. Philadelphia, Pennsylvania USA;7. Department of Emergency Medicine, Massachusetts General Hospital, Boston, Massachusetts USA |
