1. Department of Respiratory Medicine, West Park Healthcare Centre, Toronto, ON, Canada
2. Gerstein Science and Information Centre, University of Toronto Libraries, Toronto, ON, Canada
3. Department of Physical Therapy, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
4. Rehabilitation Sciences Institute, School of Graduate Studies, University of Toronto, Toronto, ON, Canada
5. Department of Medicine, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
6. School of Rehabilitation Science, Faculty of Health Science, McMaster University, Hamilton, ON, Canada