1. Department of Gastroenterology Graduate School of Medical Sciences International University of Health and Welfare Nasushiobara Japan
2. Genome Medical Sciences Project National Center for Global Health and Medicine Ichikawa Japan
3. RIKEN Center for Integrative Medical Sciences (IMS) Wako Japan
4. Department of Virology II National Institute of Infectious Diseases Tokyo Japan
5. Division of Cancer Biology Institute for Genetic Medicine Hokkaido University Sapporo Japan
6. Department of Immunology and Pathology Research Center for Hepatitis and Immunology Research Institute National Center for Global Health and Medicine Ichikawa Japan