1. Division of Gastroenterology Department of Medicine Kurume University School of Medicine Kurume City Fukuoka Japan
2. Liver Cancer Research Division Research Center for Innovative Cancer Therapy Kurume University Kurume City Fukuoka Japan
3. Iwamoto Internal Medicine Clinic Kitakyushu City Fukuoka Japan
4. Department of Microbiology Tumor and Cell biology Karolinska Institutet Stockholm Sweden
5. Department of Surgery and Science Graduate School of Medical Science Kyushu University Fukuoka City Fukuoka Japan
6. Department of Pathology Kurume University School of Medicine Kurume City Fukuoka Japan