1. Department of Hematology and Rheumatology,
2. Molecular Hematology/Oncology, and
3. Biochemistry, Tohoku University Graduate School of Medicine, Sendai, Japan;
4. Department of Hematology and Cell Therapy, Yamagata University Faculty of Medicine, Yamagata, Japan; and
5. Molecular Hematology and
6. Medical Biochemistry, Tohoku University Graduate School of Medicine, Sendai, Japan