1. Division of Allergy, Pulmonary and Critical Care Medicine and
2. Division of Respirology, University of Ottawa, Ottawa, Ontario, Canada
3. Department of Critical Care Medicine and
4. Department of Emergency Medicine, University of Minnesota, Minneapolis, Minnesota
5. Division of Pulmonary and Critical Care Medicine and
6. Department of Medicine and
7. Department of Anesthesia, University of California, San Francisco, San Francisco, California
8. Department of Biostatistics, Johns Hopkins University, Baltimore, Maryland
9. Interdepartmental Division of Critical Care Medicine
10. Department of Medicine
11. Department of Physiology, and
12. Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
13. Department of Epidemiology
14. Department of Population Health, and
15. Department of Medicine, Montefiore Medical Center, Bronx, New York
16. Department of Psychology, Brigham Young University, Provo, Utah
17. Pulmonary and Critical Care Division, Intermountain Medical Center, Murray, Utah
18. Division of Pulmonary, Critical Care, and Sleep Medicine, University of Washington, Seattle, Washington
19. Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor, Michigan
20. Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
21. Pulmonary Center, Boston University School of Medicine, Boston, Massachusetts
22. Division of Pulmonary Sciences & Critical Care, University of Colorado, Denver, Colorado
23. Department of Emergency Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
24. Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
25. Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Vermont, Burlington, Vermont
26. Division of Pulmonary and Critical Care Medicine, Harvard University, Boston, Massachusetts
27. Division of Pulmonary and Critical Care, Northwestern University Feinberg School of Medicine, Chicago, Illinois; and
28. Division of Lung Diseases, NHLBI, Bethesda, Maryland