1. Institute of Medical Sciences, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
2. Faculty of Medicine, University of Ottawa, Ottawa, Canada
3. Division of Medical Oncology, Sunnybrook Odette Cancer Centre, University of Toronto, Toronto, Ontario, Canada
4. Department of Radiation Oncology, Sunnybrook Odette Cancer Centre, University of Toronto, Toronto, Ontario, Canada
5. Division of Neurosurgery, St Michael’s Hospital, University of Toronto, Toronto, Canada
6. Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
7. Institute of Clinical Evaluative Sciences, Sunnybrook Health Sciences Centre, Sunnybrook Research Institute, Toronto, Ontario, Canada