1. Department of Gastroenterological, Breast and Endocrine Surgery, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi 755‑8505, Japan
2. Department of Gastroenterological, Breast and Endocrine Surgery, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi 755-8505, Japan
3. Department of Clinical Research in Tumor Immunology, Showa University Clinical Research Institute for Clinical Pharmacology and Therapeutics, Setagaya, Tokyo 157‑8577, Japan
4. Department of Molecular Pathology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi 755‑8505, Japan
5. Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565‑0871, Japan
6. Department of Translational Research and Developmental Therapeutics Against Cancer, Yamaguchi University School of Medicine, Ube, Yamaguchi 755‑8505, Japan