1. Combined Neurosurgical and Orthopaedic Spine Program (CNOSP), Department of Orthopaedics, University of British Columbia, Vancouver, British Columbia, Canada.
2. International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, British Columbia, Canada.
3. Toronto Western Hospital, University of Toronto, Toronto, Ontario, Canada.
4. Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Alberta, Canada.
5. Robarts Research Institute, University of Western Ontario, London, Ontario, Canada.