1. Department of Hematology and OncologyGraduate School of MedicineKyoto University Kyoto Japan
2. Department of PathologyKurume University School of Medicine Asahimachi Kurume Fukuoka Japan
3. Department of HematologyNagasaki University Hospital Sakamoto Nagasaki Japan
4. Department of HematologyKobe City Medical Center General Hospital Kobe Hyogo Japan
5. Department of HematologyTenri Hospital Mishima‐cho Tenri Nara Japan
6. Department of PathologyKyoto University Hospital Kyoto Japan