1. Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
2. ICES (formerly Institute for Clinical Evaluative Sciences), Ottawa, Ontario, Canada
3. ICES, Toronto, Ontario, Canada
4. Dalla Lana School of Public Health
5. The Hospital for Sick Children
6. Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
7. Department of Medicine, and
8. Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
9. University of British Columbia, Vancouver, British Columbia, Canada
10. McGill University, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada; and
11. Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada