1. Department of Stem Cell and Immune Regulation, Yokohama City University Graduate School of Medicine, Yokohama, Japan
2. Department of Hematology and Clinical Immunology, Yokohama City University School of Medicine, Yokohama, Japan
3. Department of Hematology, Yokohama City University Medical Center, Yokohama, Japan
4. Department of Hematology, Kanagawa Cancer Center, Yokohama, Japan
5. Department of Laboratory Medicine, Yokohama City University Hospital, Yokohama, Japan
6. Department of Biostatistics, Yokohama City University School of Medicine, Yokohama, Japan