1. Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada.
2. Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.
3. Bruyère Research Institute, Ottawa, Ontario, Canada.
4. Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa Hospital, Ottawa, Ontario, Canada.
5. Department of Family Medicine, McMaster University, Hamilton, Ontario, Canada.
6. Division of Palliative Care, Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada.