1. Division of Pulmonary and Critical Care Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
2. Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
3. Department of Internal Medicine, Mount Auburn Hospital, Harvard Medical School, Boston, Massachusetts
4. Division of Pulmonary, Critical Care, and Sleep Medicine, the Ohio State University Wexner Medical Center, Columbus, Ohio
5. Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Ontario, Canada
6. Division of Allergy, Pulmonary, Critical Care, and Sleep Medicine, Boston University School of Medicine, Boston, Massachusetts
7. American Thoracic Society, New York, New York; and
8. Division of Pulmonary and Critical Care and Department of Medicine, Mount Auburn Hospital, Harvard Medical School, Boston, Massachusetts