1. Liver Unit, Division of Gastroenterology and Hepatology, Department of Medicine, University of Calgary, Calgary, Alberta, Canada
2. BC Centre for Disease Control, Vancouver, British Columbia, Canada
3. University of Montreal, Montreal, Quebec, Canada
4. University of Manitoba, Winnipeg, Manitoba, Canada
5. Western University, London, Ontario, Canada
6. Dalhousie University, Halifax, Nova Scotia, Canada
7. University of British Columbia, Vancouver, British Columbia, Canada
8. Center for Disease Analysis, Louisville, Colorado, USA
9. University of Toronto, Toronto, Ontario, Canada