1. Division of Hematology, Ichinomiya Municipal Hospital, Ichinomiya, Japan,
2. Department of Hematology, Ichinomiya Nishi Hospital, Ichinomiya, Japan,
3. ivision of Pathology, Ichinomiya Municipal Hospital, Ichinomiya, Japan,
4. Department of Pathology and Laboratory Medicine, Graduate School of Medicine, Nagoya University, Nagoya, Japan