1. Department of Epidemiology, Biostatistics, and Occupational Health McGill University Montreal Quebec Canada
2. Division of Surgical Oncology Odette Cancer CentreSunnybrook Health Sciences Centre Toronto Ontario Canada
3. ICES Toronto Ontario Canada
4. Division of Medical Oncology Odette Cancer CentreSunnybrook Health Sciences Centre Toronto Ontario Canada
5. Division of Radiation Oncology Odette Cancer CentreSunnybrook Health Sciences Centre Toronto Ontario Canada
6. Department of Community Health Sciences University of Manitoba Winnipeg Manitoba Canada