1. Department of Medicine, Teikyo University School of Medicine
2. Health Labor Science Research Grants from Research on Measures for Intractable Diseases, The Intractable Hepato-Biliary Diseases Study Group in Japan
3. Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine
4. The Japanese Society of Gastroenterology
5. Division of Gastroenterology, Tohoku University Graduate School of Medicine
6. Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University
7. The Japan Society of Hepatology
8. Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo