| 2008–2011 | Chief Investigator of study group of data mining analysis for chronic hepatitis C in Japanese Ministry of Health, Welfare and Labor |
| 2012– | Chief Investigator of study group of clinical study in viral hepatitis and hepatocellular carcinoma including Japan Red Cross Hospital Association, supported by Japanese Ministry of Health, Welfare and Labor |
| 2009– | Board Member of Japanese Society of Hepatology |
| 2010– | Board Member of Japanese Association for Liver Cancer |
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