1. Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora
2. Department of Veterans Affairs, Eastern Colorado Health Care System, Aurora
3. Departments of Medicine, Humanities and Public Health Sciences, Penn State College of Medicine, Hershey, Pennsylvania
4. Department of Anesthesiology, Columbia University, New York, New York
5. Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York
6. Division of Pulmonary, Critical Care, and Sleep Medicine, Cambia Palliative Care Center of Excellence, University of Washington, Seattle
7. Division of Pulmonary, Allergy, and Critical Care, Department of Medicine, Columbia University, New York, New York
8. Dana Farber Cancer Institute, Boston, Massachusetts
9. Center for Geriatric Surgery, Brigham and Women’s Hospital, Boston, Massachusetts
10. Division of Internal Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora
11. Department of Medicine, Tulane University School of Medicine, New Orleans, Louisiana
12. Center for Surgery and Public Health, Brigham and Women’s Hospital, Boston, Massachusetts
13. South Shore Health, Weymouth, Massachusetts
14. Department of Pulmonary Critical Care, Tulane University School of Medicine, New Orleans, Louisiana
15. Department of Psychiatry, Tulane University School of Medicine, New Orleans, Louisiana
16. Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Penn State College of Medicine, Hershey, Pennsylvania
17. University of Colorado School of Medicine, Aurora
18. Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora
19. Evergreen Health Care, Kirkland, Washington
20. Department of Vascular Surgery, Tufts University School of Medicine, Maine Medical Center, Portland
21. Division of Pulmonary, Critical Care, and Sleep Medicine, University of Washington, Seattle
22. Columbia University Vagelos College of Physicians and Surgeons, New York, New York
23. Department of Medicine, University of Washington, Seattle
24. Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Vermont Larner College of Medicine, Burlington