1. St. John's Rehab Research Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
2. Rehabilitation Sciences Institute, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
3. Faculty of Health Sciences, Ontario Tech University, Oshawa, Ontario, Canada
4. Lawrence S. Bloomberg Faculty of Nursing, University of Toronto, Toronto, Ontario, Canada
5. Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
6. Division of Respiratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
7. Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
8. Division of Respiratory, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
9. Respiratory Medicine, West Park Healthcare Centre, Toronto, Ontario, Canada