1. Department of Hematology/Oncology, Nagano Children’s Hospital, Azumino, Japan
2. Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
3. Department of General Pediatrics, Nagano Children’s Hospital, Azumino, Japan
4. Department of Laboratory Medicine, Nagano Children’s Hospital, Azumino, Japan
5. Life Science Research Center, Nagano Children’s Hospital, Azumino, Japan
6. Department of Pediatrics, Matsumoto Dental University School of Dentistry, Shiojiri, Japan