Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada.|Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada.|Department of Surgery, Division of Neurosurgery, Sunnybrook Hospital, University of Toronto, Toronto, Ontario, Canada.|Canadian Forces Health Services, Directorate of Mental Health, Ottawa, Ontario, Canada.|Neuroscience and Mental Health, Hospital for Sick Children Research Institute, Toronto, Ontario, Canada.|Department of Diagnostic Imaging, Hospital for Sick Children Research Institute, Toronto, Ontario, Canada.