1. Department of Gastroenterology, Tohoku University Hospital
2. Department of Gastroenterology, National Hospital Organization Takasaki General Medical Center
3. Department of Gastroenterology and Hepatology, Gunma University Graduate School of Medicine
4. Department of Ophthalmology, Gunma University Hospital
5. Department of Gastroenterology and Hepatology, Hokkaido University Hospital
6. Division of Gastroenterology and Hepatology, Tokyo Medical University Ibaraki Medical Center
7. Mikawa Eye Clinic
8. Department of Ophthalmology, Tohoku University Hospital
9. Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine