1. Division of Gastroenterology, Department of Medicine; Kurume University School of Medicine; Japan
2. Biostatistics Center; Kurume University; Japan
3. Departments of Digestive Disease Information and Research; Kurume University School of Medicine; Japan
4. Department of Gastroenterology; National Hospital Organization, Kyushu Medical Center; Japan
5. Radiology; Kurume University School of Medicine; Japan
6. Center for Diagnostic Imaging; Kurume University Hospital; Japan
7. St Mary's Hospital; Kurume Japan
8. Liver Cancer Research Division, Research Center for Innovative Cancer Therapy; Kurume University; Japan
9. Division of Gastroenterology and Hepatology; Mayo Clinic; Rochester Minnesota USA