1. Department of Hematology, Nippon Medical School, Tokyo, Japan
2. Department of Microbiology and Immunology, Nippon Medical School, Tokyo, Japan
3. Division of Hematology, Department of Internal Medicine, Juntendo University School of Medicine, Tokyo, Japan
4. Department of Hematology, Gunma University, Gunma, Japan
5. Department of Hematology and Oncology, IMSUT Hospital, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
6. Department of Hematology, Tokyo Women's Medical University, Tokyo, Japan
7. Department of Hematology, The Fraternity Memorial Hospital, Tokyo, Japan
8. Department of Clinical Oncology, Iwate Medical University School of Medicine, Iwate, Japan
9. Faculty of Health Science, Daito Bunka University Graduate School of Sports and Health Science, Tokyo, Japan
10. Department of Preventive Medicine, Daito Bunka University Graduate School of Sports and Health Science, Saitama, Japan