1. Faculty of Health Sciences, Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
2. Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
3. Department of Radiology, McMaster University, Hamilton, ON, Canada
4. London Health Science Centre Combined Neurosurgical and Orthopaedic Spine Program, Schulich School of Medicine, Western University, ON, Canada
5. Department of Orthopedic Surgery, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
6. Department of Spine, King Faisal Medical City, Abha, Saudi Arabia
7. Department of Spine, McMaster University, Hamilton, ON, Canada
8. Division of Neurosurgery, McMaster University, Hamilton General Hospital, ON, Canada