1. Division of Biomarker Discovery, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center Hospital East, Kashiwa, Japan
2. Department of Palliative Medicine, National Cancer Center Hospital East, Kashiwa, Japan
3. Department of Hepatobiliary and Pancreatic Oncology, National Cancer Center Hospital East, Kashiwa, Japan
4. Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, Tokyo, Japan
5. Division of Pharmacotherapeutics, Keio University Faculty of Pharmacy, Tokyo, Japan
6. Toray Industries, Inc., Kamakura, Japan
7. Department of Gastrointestinal Medical Oncology, National Cancer Center Hospital, Tokyo, Japan
8. Pathology Division, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center Hospital East, Kashiwa, Japan
9. Department of Molecular and Cellular Medicine, Tokyo Medical University, Tokyo, Japan