1. Division of Thoracic Surgery and Interventional Pulmonology, Swedish Cancer Institute, Seattle, Washington
2. Medical Data Research Center, Providence St. Joseph Health, Portland, Oregon
3. Division of Pulmonary and Critical Care, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
4. Division of Pulmonary, Allergy and Critical Care Medicine, Duke University, Durham, North Carolina
5. Oxford Respiratory Trials Unit, University of Oxford, Oxford, United Kingdom
6. Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Medical University of South Carolina, Charleston, South Carolina
7. Department of Pulmonary Medicine, MD Anderson Cancer Center, Houston, Texas
8. Department of Internal Medicine, Pulmonology, and Critical Care Medicine, Thoraxklinik Universitatsklinikum Heidelberg, Heidelberg, Germany
9. Division of Pulmonary/Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
10. Division of Allergy, Pulmonary and Critical Care, Vanderbilt University, Nashville, Tennessee
11. Division of Pulmonary and Critical Care Medicine, University of Utah, Salt Lake City, Utah
12. Division of Pulmonary Disease and Critical Care Medicine, Virginia Commonwealth University, Richmond, Virginia; and
13. Department of Respiratory Medicine, Gloucestershire Royal Hospital, Gloucester, United Kingdom