1. Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
2. Department of Orthopaedic Surgery, Aarhus University Hospital, Aarhus,Denmark
3. Population Health Research Institute, St George’s University of London, London, UK
4. Department of Population Health Sciences, School of Life Course & Population Sciences, King’s College London, London, UK
5. Health Psychology Section, Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
6. Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
7. Research Centre for Health and Welfare Technology, Programme for Rehabilitation, VIA University College, Aarhus, Denmark