1. Institute for Pulmonary Rehabilitation Research Schoen Klinik Berchtesgadener Land Schoenau am Koenigssee Germany
2. Department of Pulmonary Rehabilitation Philipps‐University MarburgGerman Center for Lung Research (DZL) Marburg Germany
3. Department of Internal Medicine Division of Pulmonary Diseases Philipps‐University Marburg Marburg Germany
4. Teaching HospitalParacelsus Medical University Salzburg Austria
5. Department of Medicine, Pulmonary and Critical Care Medicine University Medical Center Giessen and MarburgPhilipps‐University MarburgMember of the German Center for Lung Research (DZL) Marburg and Schönau Königssee Germany
6. Department of Pulmonary Medicine University of Giessen and Marburg Lung Center (UGMLC)University Hospital of GiessenJustus‐Liebig‐University of Giessen Giessen Germany
7. Department of General and Thoracic Surgery University Hospital of GiessenJustus‐Liebig‐University of Giessen Giessen Germany
8. Department of Thoracic Surgery University of MunichLMU Munich Germany
9. Clinic of Cardiac Surgery University of MunichLMU Munich Germany
10. Department of Internal Medicine V University of MunichLMUComprehensive Pneumology Center, (CPC‐M)Member of the German Center for Lung Research (DZL) Munich Germany