1. Division of HematologySaitama Medical Center, Jichi Medical University, Saitama, Japan
2. Division of RadiologySaitama Medical Center, Jichi Medical University, Saitama, Japan
3. Research Division of Cell and Molecular MedicineCenter for Molecular Medicine, Jichi Medical University, Tochigi, Japan
4. Division of NephrologySaitama Medical Center, Jichi Medical University, Saitama, Japan