1. Department of Radiology, University of British Columbia, Vancouver General Hospital, 899 W 12th Ave, Vancouver, BC V5Z 1M9, Canada.
2. Division of Physical Medicine and Rehabilitation Medicine, University of British Colombia, Vancouver, BC, Canada.
3. GF Strong Rehabilitation Centre, Vancouver Costal Health, Vancouver, BC, Canada.
4. International Collaboration on Repair Discoveries, Blusson Spinal Centre, Vancouver, BC, Canada.