1. Department of Internal Medicine, Justus‐Liebig‐University Giessen Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL) Giessen Germany
2. Department of Internal Medicine, Universities of Giessen and Marburg Lung Center (UGMLC) Institute for Lung Health (ILH), Cardio‐Pulmonary Institute (CPI), Member of the German Center for Lung Research (DZL) Giessen Germany
3. Department of Internal Medicine II, Pulmonology and Intensive Care Kreisklinik Bad Reichenhall Bad Reichenhall Germany
4. Department of Internal Medicine II, Faculty of Medicine Regensburg University Regensburg Germany
5. Department of Internal Medicine II University Medical Center Regensburg Regensburg Germany
6. Department of Respiratory Medicine and Infectious Diseases Hannover Medical School Hannover Germany
7. Member of the German Center for Lung Research (DZL) Biomedical Research in Endstage and Obstructive Lung Disease Hanover (BREATH) Hannover Germany
8. Klinik III für Innere Medizin Herzzentrum der Universität zu Köln Cologne Germany
9. Department of Medicine V, LMU University Hospital, LMU Munich, Comprehensive Pneumology Center Member of the German Center for Lung Research (DZL) Giessen Germany
10. Department of Respiratory Medicine, Pulmonary Hypertension Unit University Hospital Zurich Zurich Switzerland
11. Thoraxklinik‐Heidelberg gGmbH German Center for Lung Research (DZL) Heidelberg Germany
12. Department of Cardiology DRK Kliniken Berlin Westend Berlin Germany
13. Department of Respiratory Medicine Eppendorf University Hospital Hamburg Germany
14. Klinik fur Innere Medizin V, Pneumologie Universitätsklinikum des Saarlandes Homburg Germany
15. Internal Medicine I—Department of Pneumology University Hospital Carl Gustav Carus of TU Dresden Germany