1. Division of Hepatobiliary and Pancreatic Diseases Department of Internal Medicine, Hyogo College of Medicine
2. Ultrasound Imaging Center, Hyogo College of Medicine
3. Pathology, Division of Surgical Patholog, Hyogo College of Medicine
4. Department of Surgery Hepato-biliary-pancreatic Surgery, Hyogo College of Medicine
5. Department of Pathology, Kurume University School of Medicine
6. Department of Clinical Laboratory Medicine, Kurume University School of Medicine
7. Department of Diagnostic Pathology, Kurume University School of Medicine