1. Health Economics Research Unit; Li Ka Shing Knowledge Institute; St. Michael's Hospital; Toronto; Ontario; Canada
2. Dalla Lana School of Public Health; University of Toronto; Toronto; Ontario; Canada
3. Liver Centre; Toronto Western Hospital; University Health Network/University of Toronto; Toronto; Ontario; Canada
4. University of British Columbia; Division of Gastroenterology; Vancouver; British Columbia; Canada
5. University Health Network; University of Toronto; Gastroenterology, Toronto; Ontario; Canada
6. Canadian Centre for Applied Research in Cancer Control (ARCC); University of British Columbia; Vancouver; BC; Canada