1. Division of Gastroenterology and Hepatology, McGill University Health Centre, Montreal, Quebec, Canada
2. Department of Gastroenterology and Hepatology, University of Calgary, Calgary, Alberta, Canada
3. Division of Digestive Care and Endoscopy, Dalhousie University, Halifax, Nova Scotia, Canada
4. University of British Columbia, Vancouver, British Columbia, Canada
5. Department of Medicine, Division of Infectious Diseases, University of Ottawa, Ottawa, Ontario, Canada
6. Division of Gastroenterology, Royal Alexandra Hospital, Edmonton, Alberta, Canada