1. Division of Leukemia and Lymphoma , Children’s Cancer Center, , Tokyo, Japan
2. National Center for Child Health and Development , Children’s Cancer Center, , Tokyo, Japan
3. Department of Pediatrics, Yokohama City University Graduate School of Medicine , Yokohama, Japan
4. Department of Clinical Biostatistics , Graduate School of Medicine, , Kyoto, Japan
5. Kyoto University , Graduate School of Medicine, , Kyoto, Japan
6. Center for Clinical Research and Advanced Medicine, Shiga University of Medical Science , Otsu, Japan
7. Department of Pediatrics , Graduate School of Medicine, , Chiba, Japan
8. Chiba University , Graduate School of Medicine, , Chiba, Japan
9. Department of Pediatrics, Mie University Graduate School of Medicine , Tsu, Japan
10. Department of Pediatrics, St. Luke’s International Hospital , Tokyo, Japan
11. Department of Pediatric Hematology/Oncology, Shikoku Medical Center for Children and Adults , Zentsuji, Japan
12. Department of Pediatrics, University of Occupational and Environmental Health , Kita-Kyushu, Japan
13. Department of Hematology and Oncology, Shizuoka Children’s Hospital , Shizuoka, Japan
14. Division of Cancer Immunodiagnostics , Children’s Cancer Center, , Tokyo, Japan
15. Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development , Tokyo, Japan
16. Department of Pediatrics, Graduate School of Medicine Kyoto University , Kyoto, Japan
17. Department of Pediatrics, Hirosaki University Graduate School of Medicine , Hirosaki, Japan
18. Clinical Research Center, National Hospital Organization Nagoya Medical Center , Nagoya, Japan
19. Department of Pediatrics, University of Tokyo , Tokyo, Japan
20. Department of Pediatrics, Shiga University of Medical Science , Otsu, Japan
21. Department of Pediatric Surgery, Nihon University School of Medicine , Tokyo, Japan
22. Human Health Science, Kyoto University , Kyoto, Japan