1. School of Epidemiology Public Health, and Preventative Medicine, University of Ottawa, Ottawa, Canada
2. Division of Medical Oncology University of Ottawa, Ottawa, Canada
3. Department of Medicine University of Ottawa, Ottawa, Canada
4. Ottawa Hospital Research Institute, Ottawa, Canada
5. Department of Oncology, Edmonton, Canada
6. Division of Medical Oncology University of Alberta, Cross Cancer Institute, Edmonton, Canada
7. Clinical Epidemiology Program, University of Ottawa, Ottawa, Canada
8. Department of Psychology University of Stirling, Stirling, Scotland