1. Division of Cancer Care and Epidemiology, Cancer Research Institute at Queen's University, Kingston, Ontario, Canada
2. ICES, Ontario, Canada
3. Canadian Cancer Trials Group, Kingston, Ontario, Canada
4. Cancer Care Ontario, Toronto, Ontario, Canada
5. Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
6. University of Toronto, Toronto, Ontario, Canada
7. University of Ottawa, Ottawa, Ontario, Canada
8. Department of Medicine, Queen's University, Kingston, Ontario, Canada