1. Division of Neurosurgery Toronto Western Hospital University Health Network University of Toronto Toronto ON Canada
2. Neurology Clinic Department of Neurosurgery Tartu University Hospital University of Tartu Tartu Estonia
3. Section of Neurosurgery Health Sciences Centre University of Manitoba Winnipeg MB Canada
4. Division of Neurosurgery Centre de recherché du CHUS University of Sherbrooke Sherbrooke QC Canada
5. Department of Neurosurgery University of Louisville, School of Medicine Louisville KY USA
6. Joint Department of Medical Imaging University of Toronto Toronto ON Canada
7. Schulich School of Medicine and Dentistry Western University London ON Canada
8. Krembil Research Institute Toronto ON Canada