1. Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Centre of Head and Orthopaedics, Rigshospitalet, Denmark
2. Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
3. i2minds, Klosterport 4E, Aarhus, Denmark
4. Danish National Institute for Local and Regional Government Research, Copenhagen, Denmark
5. Danish Center for Sleep Medicine, Department of Clinical Neurophysiology, Faculty of Health Sciences, University of Copenhagen, Rigshospitalet, Copenhagen, Denmark