1. Providence Veterans Affairs Medical Center, Providence, Rhode Island
2. Division of Pulmonary and Critical Care Medicine, Department of Medicine, The Warren Alpert Medical School of Brown University, Providence, Rhode Island
3. Department of Medicine, Division of Respirology, University of Ottawa, Ottawa, Canada
4. Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Canada
5. Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, New York
6. McMaster University, Hamilton, Ontario, Canada
7. American Thoracic Society, New York, New York
8. Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mount Auburn Hospital/Beth Israel Lahey Health, Cambridge, Massachusetts; and
9. Mount Auburn Hospital, Harvard Medical School, Boston, Massachusetts