1. Graduate Department of Rehabilitation Science, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
2. Department of Respiratory Medicine, West Park Healthcare Centre, Toronto, ON, Canada
3. Department of Physical Medicine and Rehabilitation, Harvard Medical School, Harvard University, Cambridge, MA, USA
4. Lawrence Bloomberg Faculty of Nursing, University of Toronto, Toronto, ON, Canada
5. University Health Network, Toronto, ON, Canada
6. Department of Physical Therapy, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
7. Department of Medicine, Faculty of Medicine, University of Toronto, Toronto, ON, Canada