1. Department of Hepatology Kagawa Prefectural Central Hospital Takamatsu
2. Department of Human Pathology Kanazawa University Graduate School of Medical Sciences Kanazawa
3. Department of Pathology and Laboratory Medicine Tokushima University Graduate School Tokushima
4. Department of Pathology Kagawa Prefectural Central Hospital Takamatsu
5. Department of Gastroenterology Tokushima Prefectural Central Hospital Tokushima
6. Department of Gastroenterology and Hepatology Kindai University Faculty of Medicine Osakasayama Japan