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. Medtronic Spine and Biologics, Memphis, Tennessee.
4. Medical University of South Carolina, Charleston, South Carolina.