1. Department of Gastroenterology and Hepatology, Hokkaido University Hospital
2. Counseling Centers for Liver Disease, Hokkaido University Hospital
3. Department of Ophthalmology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University
4. Department of Gastroenterology and Hepatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University
5. Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine