1. Department of Clinical Oncology, Kyoto University Hospital, Kyoto City, Kyoto 606‑8507, Japan
2. Department of Diagnostic Pathology, Graduate School of Medicine, Kyoto University, Kyoto City, Kyoto 606‑8507, Japan
3. Department of Surgery, Kyoto University Hospital, Kyoto City, Kyoto 606‑8507, Japan
4. Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto City, Kyoto 606‑8507, Japan
5. Clinical Genetics Unit, Kyoto University Hospital, Kyoto City, Kyoto 606‑8507, Japan
6. Oncogene Research Unit and Cancer Prevention Unit, Tochigi Cancer Center Research Institute, Utsunomiya, Tochigi 320‑0834, Japan