1. Department of Hematology Juntendo University Nerima Hospital Tokyo Japan
2. Division of Hematology and Rheumatology Department of Medicine Nihon University School of Medicine Tokyo Japan
3. Department of Hematology Saitama Medical CenterSaitama Medical University Saitama Japan
4. Department of Hematology Juntendo University School of Medicine Tokyo Japan
5. Department of Hemato‐Oncology Saitama Medical University International Medical Center Saitama Japan
6. Department of Hematology Yokohama Municipal Citizen's Hospital Yokohama Japan
7. Department of Hematology Juntendo University Urayasu Hospital Urayasu Japan
8. Department of Hematology Saiseikai Yokohama Nanbu Hospital Yokohama Japan
9. Department of Hematology and Infectious Diseases Kumamoto University Hospital Kumamoto Japan
10. Department of Medical Technology Kumamoto Health Science University Kumamoto Japan