1. First Department of Internal Medicine, Shinshu University School of Medicine, Japan
2. Department of Internal Medicine, Kakeyu Misayama Rehabilitation Center, Japan
3. Department of Internal Medicine, Division of Hepatology and Gastroenterology, Shinshu University School of Medicine, Japan
4. Department of Comprehensive Cancer Therapy, Shinshu University School of Medicine, Japan
5. Emeritus professor of Shinshu University School of Medicine, Japan