1. McMaster University, Hamilton, Ontario, Canada
2. University of Alberta, Edmonton, Alberta, Canada
3. Université de Montréal, Montreal, Quebec, Canada
4. University of Ottawa, Ottawa, Ontario, Canada
5. University of Calgary, Calgary, Alberta, Canada
6. Dalhousie University, Halifax, Nova Scotia, Canada
7. University of British Columbia, Vancouver, British Columbia, Canada
8. University of Western Ontario, London, Ontario, Canada
9. McGill University, Montreal, Quebec, Canada
10. University of Manitoba, Winnipeg, Manitoba, Canada
11. University of Toronto, Toronto, Ontario, Canada
12. Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada