1. Division of Hepato–Biliary–Pancreatic Surgery, Shizuoka Cancer Centre , Shizuoka , Japan
2. Cancer Diagnostics Research Division, Shizuoka Cancer Centre Research Institute , Shizuoka , Japan
3. Medical Genetics Division, Shizuoka Cancer Centre Research Institute , Shizuoka , Japan
4. SRL , Tokyo , Japan
5. Division of Pathology, Shizuoka Cancer Centre , Shizuoka , Japan
6. Immunotherapy Division, Shizuoka Cancer Centre Research Institute , Shizuoka , Japan
7. Shizuoka Cancer Centre Hospital and Research Institute , Shizuoka , Japan