1. Brigham and Women’s Hospital, Harvard Medical School, Boston, MA. Department of Medicine (S.M.K.), Perelman School of Medicine at the University of Pennsylvania, Philadelphia.
2. Division of Pulmonary, Critical Care, Sleep and Occupational Medicine, Department of Medicine, Indiana University, Indianapolis (M.A.A., T.L.).
3. Department of Medicine, Queen’s University, Kingston, Ontario, Canada (S.L.A.).
4. Department of Medicine, Allegheny General Hospital, Pittsburgh, PA (R.L.B.).
5. Department of Medicine, University of Colorado, Denver (M.R.B.).
6. Division of Cardiovascular Medicine and Vanderbilt Translational and Clinical Cardiovascular Research Center (E.L.B.), Vanderbilt University Medical Center, Nashville, TN.
7. Department of Biomedical Engineering, University of Wisconsin-Madison College of Engineering (N.C.).
8. Department of Pulmonary Medicine, PHEniX laboratory, Amsterdam Cardiovascular Sciences, Amsterdam UMC, Vrije Universiteit Amsterdam, the Netherlands (F.S.D.).
9. Lerner Research Institute (S.C.E.), Cleveland Clinic, OH.
10. Department of Medicine, Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute UPMC and the University of Pittsburgh School of Medicine, PA (M.T.G.).
11. Department of Medicine, Johns Hopkins University, Baltimore, MD (P.M.H.).
12. Department of Medicine (A.R.H., J.A.C.L., J.H.N.), Vanderbilt University Medical Center, Nashville, TN.
13. Department of Cardiology, Boston VA Healthcare System, West Roxbury, MA (B.A.M.).
14. Department of Pediatrics (L.M.R.), Perelman School of Medicine at the University of Pennsylvania, Philadelphia.
15. Division of Cardiovascular Medicine, Departments of Medicine and Neurology (S. Redline), Perelman School of Medicine at the University of Pennsylvania, Philadelphia.
16. Department of Medicine (S. Rich), Northwestern University Feinberg School of Medicine, Chicago, IL.
17. Department of Medicine, University of Arizona, Tucson (F.R.).
18. Department of Medicine, Yale School of Medicine, New Haven, CT (L.S.).
19. Department of Cardiovascular Medicine, Heart and Vascular Institute (W.H.W.T.), Cleveland Clinic, OH.
20. Division of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston (R.J.T.).
21. Division of Cardiology, Columbia University Vagelos College of Physicians and Surgeons, NY (E.J.T.).
22. Department of Medicine, Alpert Medical School of Brown University, Department of Health Services, Policy and Practice, Brown University School of Public Health, Providence, RI (C.E.V.).
23. Departments of Pediatrics (Division of Critical Care), Pharmacology, and Medicine (Y.Z.), Northwestern University Feinberg School of Medicine, Chicago, IL.
24. Division of Lung Diseases, National Heart, Lung, and Blood Institute, NIH, Bethesda, MD (N.R.A., L.X.).