1. Respiratory Medicine Unit, Department of Internal Medicine, Copenhagen University Hospital - Herlev-Gentofte Hospital, Hellerup, Denmark
2. The Danish Center for Sleep Medicine, Copenhagen University Hospital – Rigshospitalet, Glostrup, Denmark
3. Department of Respiratory Medicine, Copenhagen University Hospital - Amager and Hvidovre Hospital, Hvidovre, Denmark
4. Department of Respiratory Medicine, Copenhagen University Hospital - Bispebjerg Hospital, Copenhagen, Denmark
5. Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
6. Department of Clinical Physiology and Nuclear Medicine, Rigshospitalet, University Hospital Copenhagen – Rigshospitalet, Copenhagen, Denmark
7. Centre for Physical Activity Research, University Hospital Copenhagen – Rigshospitalet, Copenhagen, Denmark
8. Neurovascular Research Laboratory, Faculty of Life Sciences and Education, University of South Wales, Pontypridd, UK
9. Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark