1. Canadian Concussion Center, Toronto, Ontario, Canada.
2. Neuropsychology Clinic, Krembil Neuroscience Network, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada.
3. Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada.
4. Division of Neurology, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada.
5. Biostatistics Research Unit, University Health Network, Toronto, Ontario, Canada.
6. Division of Neurosurgery, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada.