1. Division of Medical Oncology/Hematology, Department of Medicine, Kobe University Graduate School of Medicine, Kobe City, Hyogo Prefecture
2. Hyogo Prefectural AWAJI Medical Center, Sumoto City, Hyogo Prefecture
3. Laboratory of Hematology, Division of Medical Biophysics, Kobe University Graduate School of Health Sciences, Kobe City, Hyogo Prefecture, Japan