1. University of British Columbia, Combined Neurosurgical and Orthopaedic Spine Program (CNOSP), Department of Orthopaedics, Vancouver, British Columbia, Canada.
2. University of British Columbia, International Collaboration Repair Discoveries (ICORD), Vancouver, British Columbia, Canada.
3. Toronto Western Hospital, Spinal Program, Krembil Neuroscience Centre, Toronto, Ontario, Canada.
4. Robarts Research Institute at the University of Western Ontario, Bio Therapeutics Research Group, London, Ontario, Canada.
5. University of Toronto, Department of Surgery, Toronto, Ontario, Canada.