1. Department of Pediatrics; Dokkyo Medical University School of Medicine; Tochigi Japan
2. Department of Human Resource Development for Cancer; Faculty of Medical Sciences; University of Fukui; Fukui Japan
3. Department of Pediatrics; Nagoya University Graduate School of Medicine; Nagoya Japan
4. Department of Pediatrics; Iwate Prefectural Chubu Hospital; Iwate Japan
5. Department of Pediatrics; Niigata Cancer Center Hospital; Niigata Japan
6. Department of Pediatrics; Keio University School of Medicine; Tokyo Japan
7. Clinical Research Center; National Hospital Organization Nagoya Medical Center; Nagoya Japan
8. Department of Pediatrics; Soma General Hospital; Fukushima Japan
9. Department of Hematology and Oncology; Tokyo Metropolitan Children's Medical Center; Tokyo Japan
10. Department of Pediatrics; Hiroshima Red Cross Hospital & Atomic-bomb Survivors Hospital; Hiroshima Japan
11. Department of Pediatrics; Japan Community Healthcare Organization Tokuyama Central Hospital; Tokuyama Japan
12. Department of Pediatrics; Nagasaki University School of Medicine; Nagasaki Japan
13. Department of Pediatrics; St. Luke's International Hospital; Tokyo Japan
14. Department of Pediatrics and Developmental Biology; Tokyo Medical and Dental University; Tokyo Japan
15. Department of Human Health Sciences; Graduate School of Medicine; Kyoto University; Kyoto Japan
16. Department of Pediatrics; Ehime University Graduate School of Medicine; Ehime Japan