1. Department of Surgery, Division of Hepato‐Pancreato‐Biliary Surgery and Transplantation, Graduate School of MedicineKyoto UniversityKyoto Japan
2. Departments of Gastroenterological Surgery and OncologyKitano HospitalOsaka Japan
3. Department of Immunology and Immunopathology, Faculty of MedicineKagawa UniversityKagawa Japan
4. GalPharma Co., Ltd.Kagawa Japan
5. Breast SurgeryKitano HospitalOsaka Japan
6. Department of Tazuke Kofukai Medical Research InstituteKitano HospitalOsaka Japan