1. Department of Orthopaedic Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
2. Department of Trauma Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
3. Department of Geriatric Medicine, University Medical Center of Groningen, University of Groningen, Groningen, The Netherlands
4. Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
5. Department of Orthopaedic Surgery, Amsterdam Movement Sciences, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
6. Department of Engineering Systems and Services, Faculty Technology Policy Management, Delft University of Technology, Delt, Netherlands
7. Department of Surgery, Trauma Surgery, Leiden University Medical Center, Leiden, The Netherlands
8. Department of Orthopaedic Surgery, Onze Lieve Vrouw Gasthuis, Amsterdam, The Netherlands
9. Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Canada
10. Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Canada
11. Department of Orthopaedic Surgery, University of Minnesota, Minneapolis, Minnesota, USA
12. Department of Surgery, Western University, London, Canada