1. Department of Hematology, Japan Community Healthcare Organization (JCHO), Tokyo Yamate Medical Center, Tokyo, Japan
2. Department of Diagnostic Pathology, IMSUT Hospital of The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
3. Department of Infectious Diseases and Applied Immunology, IMSUT Hospital of The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
4. Department of Hematology and Oncology, IMSUT Hospital of The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
5. Department of Pathology, Japan Community Healthcare Organization (JCHO), Tokyo Yamate Medical Center, Tokyo, Japan