1. Bruyère Research Institute Bruyère Continuing Care Ottawa Canada
2. Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health University of Toronto Toronto Canada
3. Independent Information Specialist Ottawa Ontario Canada
4. School of Epidemiology and Public Health, Faculty of Medicine University of Ottawa Ottawa Canada
5. Department of Family Medicine, Faculty of Medicine University of Ottawa Ottawa Canada
6. Department of Clinical Epidemiology, Ottawa Hospital Research Institute The Ottawa Hospital Ottawa Canada