1. Pulmonary Hypertension Research Group, Centre de Recherche de l’Institut de Cardiologie et de Pneumologie de Québec, Quebec City, Quebec, Canada
2. Department of Medicine, Université Laval, Quebec City, Quebec, Canada
3. INSERM UMR_S 999, Hôpital Marie Lannelongue, Le Plessis-Robinson, Paris, France
4. Université Paris-Sud and Université Paris-Saclay, Kremlin-Bicêtre, Paris, France
5. Universities of Giessen and Marburg Lung Center, Member of the German Center for Lung Research, Justus Liebig University Giessen, Giessen, Germany
6. Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland
7. Division of Pediatric Cardiology, Department of Pediatrics, and
8. Division of Pulmonary and Critical Care Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, California
9. VA Palo Alto Health Care System, Palo Alto, California; and
10. Assistance Publique-Hôpitaux de Paris, Service de Pneumologie, Centre de Référence de l’Hypertension Pulmonaire Sévère, Département Hospitalo-Universitaire Thorax Innovation, Hôpital de Bicêtre, Paris, France