1. Division of Hematology and Oncology Department of Medicine Kyoto Prefectural University of Medicine Kyoto Japan
2. Department of Hematology Japanese Red Cross Kyoto Daiichi Hospital Kyoto Japan
3. Department of Surgical Pathology Kyoto Prefectural University of Medicine Kyoto Japan
4. Department of Pathology and Laboratory Medicine Nagoya University Graduate School of Medicine Nagoya Japan
5. Division of Hematopoietic Disease Control Institute of Medical Science The University of Tokyo Tokyo Japan
6. Department of Pathology and Tumor Biology Kyoto University Kyoto Japan