1. Division of Orthopaedic Surgery, Oslo University Hospital, 0424 Oslo, Norway
2. Department of Clinical Neurosciences for Children, Division of Pediatric and Adolescent Medicine, Oslo University Hospital, 0424 Oslo, Norway
3. Centre for Intelligent Musculoskeletal Health, Faculty of Health Science, Oslo Metropolitan University, 0130 Oslo, Norway
4. Department of Sports Medicine, Norwegian School of Sport Sciences, 0863 Oslo, Norway
5. Department of Rehabilitation Science and Health Technology, Oslo Metropolitan University, 0130 Oslo, Norway
6. Department of Interdisciplinary Health Sciences, Medical Faculty, University of Oslo, 0318 Oslo, Norway