Affiliation: | 1. Department of Internal Medicine II, Pneumology, University Hospital Regensburg, , Regensburg;2. Research Centre, IUCPQ, Université Laval, , Québec, Canada;3. Department of Respiratory Medicine, Prince Phillip Hospital, Swansea College of Medicine, , Llanelli, Wales, UK;4. Centre for Sleep Medicine, H?pital Antoine Béclère, , Clamart, France;5. Centre for Pneumology, Donaustauf Hospital, , Donaustauf, Germany |