1. Department of Orthopedics, University of British Columbia, Vancouver, British Columbia, Canada.
2. Department of Research, Rick Hansen Institute, Vancouver, British Columbia, Canada.
3. University of British Columbia, Vancouver, British Columbia, Canada.
4. University of Toronto Spine Program, St. Michael's Hospital, Toronto, Ontario, Canada.
5. Department of Surgery, The Ottawa Hospital, Ottawa Hospital Research Institute, University of Ottawa, Ontario, Canada.
6. Department of Physical Medicine and Rehabilitation, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
7. Department of Neurosurgery, Dalhousie University, Halifax, Nova Scotia, Canada.
8. Horizon Health Network/Dalhousie University, St. John, New Brunswick, Canada.
9. Saint John Regional Hospital, St John, New Brunswick, Canada.
10. University of Calgary Spine Program, Calgary, Alberta, Canada.
11. University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
12. Department of Surgery, Orthopaedics and Neurosurgery, University of Manitoba, Winnipeg, Manitoba, Canada.
13. Division of Neurosurgery and Spinal Program, University of Toronto, Ontario, Canada.
14. Hamilton General, Hamilton, Ontario, Canada.
15. McMaster University, Hamilton, Ontario, Canada.
16. Division of Orthopaedic Surgery, Western University, London, Ontario, Canada.
17. Hôpital Enfant-Jésus/Laval University, Quebec City, Quebec, Canada.
18. Department of Orthopaedic Surgery, Hôpital Ste-Justine, Montréal, Quebec, Canada.
19. Université de Montréal, Montréal, Quebec, Canada.
20. Department of Physical Medicine and Rehabilitation, University of British Columbia, Vancouver, British Columbia, Canada.
21. Department of Clinical Neurosciences, University of Calgary, Alberta, Canada.
22. University Health Network, Toronto Rehabilitation Institute, Toronto, Ontario, Canada.
23. École de réadaptation, Université de Montréal, Montréal, Quebec, Canada.
24. Hamilton Health Sciences, Hamilton, Ontario, Canada.
25. Department of Surgery, Royal Alexandra Hospital, Edmonton, Alberta, Canada.