Institution: | 1. Department of Hematology and Oncology, Oji General Hospital, 3-4-8 Wakakusa-cho, Tomakomai, 053-8506, Japan 2. Department of Gastroenterology, Oji General Hospital, Tomakomai, Japan 3. Department of Medical Oncology and Hematology, Sapporo Medical University, Sapporo, Japan 4. Department of Pathology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
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