1. Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts
2. Department of Medicine, Harvard Medical School, Boston, Massachusetts
3. Boston MedFlight, Bedford, Massachusetts
4. Division of Critical Care Medicine, Department of Emergency Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
5. Department of Emergency Medicine, Harvard Medical School, Boston, Massachusetts
6. Department of Surgery, Brigham and Women’s Hospital, Boston, Massachusetts
7. Division of Critical Care Medicine, Department of Emergency Medicine, Massachusetts General Hospital, Boston, Massachusetts