1. Department of General Internal Medicine and Clinical Laboratory Medicine; Akita University Graduate School of Medicine; Akita Japan
2. Department of Haematology, Nephrology and Rheumatology; Akita University Graduate School of Medicine; Akita Japan
3. Department of Haematology; Tokyo Women's Medical University; Tokyo Japan
4. Haematology Division; Department of Internal Medicine; Saitama Medical University; Saitama Japan
5. Department of Haematology; Nippon Medical School; Tokyo Japan
6. First Department of Internal Medicine; Gifu University School of Medicine; Gifu Japan
7. Department of Cellular Transplantation Biology; Kanazawa University Graduate School of Medicine; Kanazawa Japan
8. Division of Haematology; NTT Medical Centre; Tokyo Japan
9. Department of Haematology; Yokohama City University Medical Centre; Yokohama Kanagawa Japan
10. Department of Transfusion Medicine and Cell Therapy Blood Transfusion Service; Kumamoto University School of Medicine; Kumamoto Japan
11. National Hospital Organization Kumamoto National Hospital Medical Centre; Kumamoto Japan
12. Division of Haematology; Juntendo University School of Medicine; Tokyo Japan
13. Saitama International Medical Centre; Saitama Medical University; Saitama Japan
14. Blood Transfusion Service; Gunma University Hospital; Maebashi Gunma Japan
15. Department of Haematology; Tokyo Medical and Dental University; Tokyo Japan
16. Department of Haematology and Immunology; Tohoku University Graduate School of Medicine; Sendai Japan
17. Division of Haematology, Internal Medicine; Showa University Fujigaoka Hospital; Yokohama Japan
18. Division of Haematology; Department of Medicine; Jichi Medical School; Tochigi Japan
19. Department of Haematology and Oncology; Graduate School of Medicine; The University of Tokyo; Tokyo Japan