1. Centre for Research and Development, Uppsala University, Region of Gävleborg, Gävle Hospital, Gävle, Sweden
2. Department of Otorhinolaryngology, Head and Neck Cancer, Uppsala University, Uppsala, Sweden
3. Department of Clinical Sciences, Respiratory Medicine, Allergology and Palliative Medicine, Faculty of Medicine, Lund University, Lund, Sweden
4. Department of Respiratory Medicine, Faculty of Medicine and Health, Örebro University, Örebro Sweden
5. Department of Medical Sciences, Respiratory, Allergy and Sleep Research, Uppsala University, Uppsala, Sweden
6. Pulmonary Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden
7. Center for Sleep and Wake Disorders, Institute for Medicine, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden