1. Division of Pulmonary Diseases and Critical Care Medicine, Department of Medicine, and
2. Marsico Lung Institute/Cystic Fibrosis Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
3. Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland
4. Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Michigan Health System, Ann Arbor, Michigan
5. Department of Thoracic Medicine and Surgery, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
6. Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
7. Department of Medicine, Columbia University Medical Center, New York, New York
8. Division of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois, Chicago, Illinois
9. Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California, San Francisco, San Francisco, California
10. Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California, Los Angeles, Los Angeles, California
11. Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Utah, Salt Lake City, Utah
12. Department of Pulmonary, Critical Care, Allergy and Immunologic Diseases, Wake Forest Baptist Health, Winston Salem, North Carolina; and
13. Department of Medicine, Weill Cornell Medical College, New York-Presbyterian Hospital/Weill Cornell Medical Center, New York, New York