1. Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, Tokyo, Japan
2. Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan
3. Central Blood Institute, Blood Service Headquarters, Japanese Red Cross Society, Tokyo, Japan
4. Japanese Red Cross Hokkaido Block Blood Center, Sapporo, Japan
5. Department of Gastroenterology, National Hospital Organization Takasaki General Medical Center, Gunma, Japan
6. Department of Gastroenterology and Hepatology, Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
7. Department of Gastroenterology, Faculty of Medicine, Oita University, Oita, Japan
8. Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Tokyo, Japan
9. Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine, Hokkaido, Japan
10. Department of Hepatology, Shimane University Faculty of Medicine, Shimane, Japan
11. Hepatitis Information Center, Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Chiba, Japan
12. Research Center for Biological Products in the Next Generation, National Institute of Infectious Diseases, Tokyo, Japan