1. Department of Hemato‑Oncology, Saitama Medical University International Medical Center, Saitama 350‑1298, Japan
2. Division of Hematology and Rheumatology, Department of Medicine, Nihon University School of Medicine, Tokyo 173‑8610, Japan
3. Department of Hematology, Saitama Medical Center, Saitama Medical University, Saitama 350‑8550, Japan
4. Department of Hematology, Juntendo University School of Medicine, Tokyo 113‑8431, Japan
5. Department of Hematology, Juntendo University Nerima Hospital, Tokyo 177‑8521, Japan
6. Department of Hematology, Juntendo University Urayasu Hospital, Chiba 279‑0021, Japan
7. Department of Hematology, Yokohama Municipal Citizen's Hospital, Kanagawa 240‑8555, Japan
8. Department of Hematology, Saiseikai Yokohama Nanbu Hospital, Kanagawa 234‑0054, Japan
9. Department of Hematology and Infectious Diseases, Kumamoto University Hospital, Kumamoto 860‑8556, Japan