1. Division of Hematology and Rheumatology, Department of Medicine, Nihon University School of Medicine, Japan
2. Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Japan
3. Health Care Center, Hokkaido University, Japan
4. Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, Japan
5. Department of Hematology, Chiba University Hospital, Japan
6. Department of Hematology, Musashino Red Cross Hospital, Japan
7. Department of Hematology, Osaka City University Hospital, Japan
8. Department of Hematology, Suwa Red Cross Hospital, Japan
9. Department of Biomedical Statistics and Bioinformatics, Kyoto University Graduate School of Medicine, Japan
10. Tokai Central Hospital, Japan
11. Department of Hematology, Nippon Medical School, Japan