1. Division of Hematology/Oncology; Nagano Children's Hospital; Azumino Japan
2. Department of Pediatrics; Shinshu University School of Medicine; Matsumoto Japan
3. Department of Pediatrics; Nagano Prefectural Suzaka Hospital; Suzaka Japan
4. Department of Pediatrics; School of Dentistry; Matsumoto Dental University; Shiojiri Japan
5. Department of Laboratory Medicine; Nagano Children's Hospital; Azumino Japan
6. Life Science Research Center; Nagano Children's Hospital; Azumino Japan
7. Division of Clinical Pathology; Nagano Children's Hospital; Azumino Japan
8. Division of Pediatric Cardiology; Nagano Children's Hospital; Azumino Japan