1. Department of Hematology/Oncology, Institute of Medical Science, University of Tokyo, Tokyo, Japan;
2. Department of IMSUT Clinical Flow Cytometry Laboratory, Institute of Medical Science, The University of Tokyo, Tokyo, Japan;
3. Division of Oncology, Hematology and Infectious Diseases, Department of Internal Medicine, Faculty of Medicine, Fukuoka University, Fukuoka, Japan;
4. Department of Hematology/Oncology, Teikyo University School of Medicine, Tokyo, Japan