1. Life Science Research Center; Nagano Children's Hospital; Azumino Japan
2. Division of Blood Transfusion; Shinshu University Hospital; Matsumoto Japan
3. Center for Advanced Cell Therapy; Shinshu University Hospital; Matsumoto Japan
4. Department of Laboratory Medicine; Nagano Children's Hospital; Azumino Japan
5. Department of Hematology/Oncology; Nagano Children's Hospital; Azumino Japan
6. Department of Pediatrics; Shinshu University School of Medicine; Matsumoto Japan