1. Department of Nursing Science, Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway
2. Department of Orthopaedic Surgery, Lovisenberg Diaconal Hospital, Oslo, Norway
3. Division for Health Services, Norwegian Institute of Public Health, Oslo, Norway
4. Department of Family Health Care Nursing, University of California, San Francisco
5. Department of Patient Safety and Research, Lovisenberg Diaconal Hospital, Oslo, Norway
6. Department of Physical Medicine and Rehabilitation, Oslo University Hospital, Oslo, Norway
7. Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
8. Norwegian Arthroplasty Register, Department of Orthopaedic Surgery, Haukeland University Hospital, Bergen, Norway
9. Department of Clinical Medicine, University of Bergen, Bergen, Norway
10. Department of Interdisciplinary Health Sciences, Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway