Affiliation: | 1. Department of Pulmonary Medicine, University Hospital and University of Bern, Bern, Switzerland;2. Cardiology, Cardiovascular Department, University Hospital and University of Bern, Bern, Switzerland;3. Service de Pneumologie et Centre Transplantation, University Hospital and University of Lausanne, Lausanne, Switzerland;4. Academic Department of Sleep and Breathing, Royal Brompton and Harefield NHS Foundation Trust, London, United Kingdom |