1. Clinical Center
2. Division of Cardiovascular Disease, Department of Medicine, Allegheny General Hospital, Pittsburgh, Pennsylvania
3. MedStar Washington Hospital Center, Washington, DC
4. Division of Pulmonary and Critical Care Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
5. National Institute of Diabetes, Digestive, and Kidney Diseases, and
6. Pulmonary Hypertension Association, Silver Spring, Maryland
7. Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland
8. Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
9. Service de Pneumologie, Hôpital Bicêtre (Assistance Publique–Hôpitaux de Paris), Institut National de la Santé et de la Recherche Médicale U999, University Paris–Sud, Université Paris-Saclay, Le Kremlin-Bicêtre, France
10. Division of Pulmonary and Critical Care Medicine, Department of Medicine, Indiana University, Indianapolis, Indiana
11. Richard L. Roudebush VA Medical Center, Indianapolis, Indiana
12. Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
13. Division of Cardiology, Department of Medicine, University of Michigan, Ann Arbor, Michigan
14. Department of Medicine, Tufts Medical Center, Tufts University School of Medicine, Boston, Massachusetts
15. Department of Medicine, Columbia School of Medicine, New York, New York
16. Pulmonary Vascular Disease Program, Inova Fairfax Hospital, Falls Church, Virginia
17. Rheumatology Division, Department of Medicine, Georgetown University, Washington, DC; and
18. Stanford University, Department of Medicine, Stanford, California
19. NHLBI, NIH, Bethesda, Maryland