1. Head Injury Clinic, St. Michael's Hospital, Toronto, ON, Canada
2. Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
3. Brain & Spinal Cord Program & MSK Program, Toronto Rehabilitation Institute, Toronto, ON, Canada
4. St. Michael's Hospital, Toronto, ON, Canada
5. University of Toronto, Toronto, ON, Canada
6. Department of Critical Care, St. Michael's Hospital, Toronto, ON, Canada
7. Department of Anesthesia & Surgery, University of Toronto, Toronto, ON, Canada
8. Faculty of Medicine, University of Toronto, Toronto, ON, Canada