1. Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya;
2. Division of Immunology, Aichi Cancer Center Research Institute, Nagoya;
3. Department of Hematology and Oncology, Fujita Healthy University, Aichi;
4. Human Leukocyte Antigen Laboratory, Nonprofit Organization, Kyoto;
5. Department of Pediatrics, Graduate School of Medicine, University of Tokyo, Tokyo; and
6. 21st Century Center of Excellence Program, Graduate School of Medicine, University of Tokyo, Tokyo, Japan