| Institution: | 1. Division of Neurosurgery, Toronto Western Hospital, University of Toronto, Toronto, ON, Canada;2. Division of Orthopaedic Surgery, St Michael''s Hospital, University of Toronto, Toronto, ON, Canada;3. Department of Neurological Surgery, Ohio State University, Columbus, OH, USA;4. Department of Neurosurgery, University of Virginia, Charlottesville, VA, USA;5. Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA;6. Department of Neurosurgery, University of California, San Francisco, San Francisco, CA, USA;7. Department of Neurosurgery, Kansas University Medical Center, Kansas City, KS, USA;8. Department of Clinical Neurosciences, University of Calgary, Calgary, AB, Canada;9. Department of Orthopedic Surgery, Columbia University, New York, NY, USA;10. Department of Orthopaedic Surgery, Washington University in St Louis, St Louis, MO, USA;11. Department of Orthopaedics, University of Utah, Salt Lake City, UT, USA;12. Department of Orthopaedic Surgery, Thomas Jefferson University, Rothman Orthopaedic Institute, Philadelphia, PA, USA;13. Department of Neurosurgery, Louisiana State University, New Orleans, LA, USA;14. Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, PA, USA;15. Department of Orthopaedics, Emory University, Atlanta, GA, USA;p. Department of Neurological Surgery, University of California Davis, Sacramento, CA, USA;q. Division of Neurosurgery, University of Saskatchewan, Saskatoon, SK, Canada;r. Department of Neurology and Neurosurgery, McGill University Health Centre, Montreal, QC, Canada;s. Department of Health Services, University of Washington, Seattle, WA, USA |
