1. Department of Medicine, University of Toronto, Toronto, Canada
2. Toronto General Hospital Research Institute, Toronto, Canada
3. Institute for Health Policy, Management, and Evaluation, University of Toronto, Toronto, Canada
4. Library and Information Services, University Health Network, Toronto, Canada
5. Division of Medical Oncology & Hematology, University Health Network, Toronto, Canada
6. Division of Respirology, Women's College Hospital, Toronto, Canada
7. Sleep Research Laboratory, Toronto Rehabilitation Institute, Toronto, Canada
8. Division of Respirology, University Health Network, Toronto, Canada