1. Department of PneumologyCologne Merheim Hospital Kliniken der Stadt Köln Germany
2. Department of PneumologyPontificia Universidad Católica de Chile Santiago Chile
3. Faculty of Health/School of MedicineWitten/Herdecke University Cologne Germany
4. Department of Pulmonary Diseases/Home Mechanical VentilationUniversity of Groningen, University Medical Center Groningen Groningen The Netherlands
5. Groningen Research Institute of Asthma and COPDUniversity of Groningen, University Medical Center Groningen Groningen The Netherlands
6. Department of Intensive Care, Sleep Medicine and Mechanical VentilationAsklepios, Fachkliniken Munich‐Gauting Gauting Germany
7. Department of PneumologyUniversity Medical Center Freiburg Freiburg Germany
8. Clinical Trials CenterUniversity Medical Center Freiburg Germany
9. Department of PneumologySt. Remigius Hospital Opladen Germany
10. Department of PneumologyHospital der Augustinerinnen Cologne Germany