1. Department of Hematology, Tokyo Saiseikai Central Hospital, Tokyo, Japan;
2. Department of Molecular Pathogenesis, National Cerebral and Cardiovascular Center, Osaka, Japan;
3. Department of Laboratory Medicine, Tokyo Saiseikai Central Hospital, Tokyo, Japan;
4. Department of Biomedical Laboratory Sciences, School of Medicine and Health Sciences, Shinshu University, Matsumoto, Japan;
5. Department of Laboratory Medicine, Keio University School of Medicine, Tokyo, Japan; and
6. Department of Hematology, Keio University, Tokyo, Japan