Affiliation: | 1. Department of Gastroenterology, Kanagawa Cancer Center Hospital, 2-3-2,Nakao, Asahi-ku, Yokohama City, 241-8515, Japan 2. Department of Medical Oncology, Hirosaki University Graduate School of Medicine, Hirosaki, 036-8562, Japan 3. Unit of Coloproctology, Matsuda Hospital, Hamamatsu, 432-8061, Japan 4. Department of Internal Medicine, Showa University Northern Yokohama Hospital, Yokohama, 224-8503, Japan 5. Division of Gastroenterology, Department of Medicine, Showa University School of Medicine, Tokyo, 142-8666, Japan 6. Department of Chemotherapy, Tokyo Metropolitan Cancer and Infectious diseases Center Komagome Hospital, Tokyo, 113-8677, Japan 7. Department of Surgery, Showa University Fujigaoka Hospital, Yokohama, 227-8501, Japan 8. Division of Gastroenterology, Tokyo Rinkai Hospital, Tokyo, 134-0086, Japan 9. Department of Clinical Oncology, Toho University Graduate School of Medicine, Tokyo, 143-8541, Japan 10. Division of Clinical Oncology/Hematology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, 105-8471, Japan 11. Department of Internal Medicine, Showa University Toyosu Hospital, Tokyo, 135-8577, Japan 12. Department of Chemotherapy and Palliative Care, Tokyo Women’s Medical University Hospital, Tokyo, 162-8666, Japan 13. Division of Surgery, Koto Hospital, Tokyo, 136-0072, Japan
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