1. Departments of Gastroenterology and Hepatology; National Center for Global Health and Medicine; Shinjuku-ku Tokyo Japan
2. Diagnostic Radiology; National Center for Global Health and Medicine; Shinjuku-ku Tokyo Japan
3. Clinical Research and Informatics, International Clinical Research Center Research Institute; National Center for Global Health and Medicine; Shinjuku-ku Tokyo Japan
4. Diabetes Research Center; National Center for Global Health and Medicine; Shinjuku-ku Tokyo Japan
5. Department of Gastroenterology and Hepatology; National Center for Global Health and Medicine; Kohnodai Hospital; Ichikawa Chiba Japan