1. Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
2. Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, Ontario, Canada
3. Department of Anesthesia and Pain Management, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
4. Division of Physical Medicine and Rehabilitation, Department of Medicine, University of Toronto, Toronto, Ontario, Canada
5. Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, Ontario, Canada