1. Harvard Medical School, Department, Boston, Massachusetts; Brigham and Women’s Hospital, Department of Emergency Medicine, Boston, Massachusetts
2. Harvard Medical School, Department, Boston, Massachusetts; Massachusetts General Hospital, Department of Emergency Medicine, Boston, Massachusetts
3. Harvard Medical School, Department, Boston, Massachusetts; Brigham and Women’s Hospital, Department of Emergency Medicine, Boston, Massachusetts; Massachusetts General Hospital, Department of Emergency Medicine, Boston, Massachusetts
4. Massachusetts General Hospital, Department of Emergency Medicine, Boston, Massachusetts; Medical College of Georgia School of Medicine, Department, Augusta, Georgia