1. Department of Medicine, McGill University, Canada
2. Division of Clinical Epidemiology, Research Institute of the McGill University Health Centre, Canada
3. Division of Gastroenterology, McGill University Health Centre, Montreal, Quebec, Canada
4. Division of Gastroenterology, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
5. Department of Family Medicine, University of Alberta, Edmonton, Alberta, Canada
6. Division of Gastroenterology, University of Toronto, Toronto, Ontario, Canada
7. Colorectal Cancer Association of Canada, Montreal, Quebec, Canada