1 Heart and Vascular Institute, George Washington University School of Medicine and Health Sciences, Washington, DC. Electronic address: mgomberg@mfa.gwu.edu.
2 Department of Internal Medicine, Justus-Liebig University Giessen; Universities of Giessen and Marburg Lung Center and Institute for Lung Health, Members of the German Center for Lung Research, Giessen, Germany.
3 National Heart and Lung Institute, Imperial College London, London, England.
4 Department of Respiratory Medicine and Infectious Diseases, Hannover Medical School; Member of the German Center for Lung Research, Biomedical Research in Endstage and Obstructive Lung Disease Hanover, Hannover, Germany.
5 University Paris-Saclay, Hospital Bicêtre, Le Kremlin-Bicêtre, France.
6 University of Michigan, Ann Arbor, MI.
7 Department of Pulmonary and Critical Care, Lahey Hospital and Medical Center, Burlington, MA.
8 Pulmonary Department, Heart Institute, University of São Paulo Medical School, São Paulo, Brazil.
9 Brigham and Women's Hospital and Harvard Medical School, Boston, MA.
10 Merck & Co., Inc., Rahway, NJ.
11 Pulmonary Hypertension Program, University of Colorado, Anschutz Medical Campus, Aurora, CO.