1. Department of Hematology, Saitama Cancer Center, Saitama, Japan
2. Division of Hematology, Jichi Medical University Saitama Medical Center, Saitama, Japan
3. Department of Pathology, Saitama Cancer Center, Saitama, Japan
4. Department of Pathology, Moriyama Memorial Hospital, Tokyo, Japan
5. Department of Clinical Laboratory Medicine, Saitama Cancer Center, Saitama, Japan