1. Department of Paediatrics; National Kyushu Cancer Centre; Fukuoka Japan
2. Division of Paediatric Oncology; National Centre for Child Health and Development; Tokyo Japan
3. Department of Paediatrics; Sapporo Hokuyu Hospital; Sapporo Japan
4. Department of Paediatrics; Yamagata University Hospital; Yamagata Japan
5. Department of Paediatrics; Hiroshima Red Cross Hospital & Atomic-bomb Survivors Hospital; Hiroshima Japan
6. Division of Haemato-oncology/Regenerative Medicine; Kanagawa Children's Medical Centre; Yokohama Japan
7. Department of Oncology/Haematology; Shimane University Hospital Cancer Centre; Izumo Japan
8. Department of Paediatrics and Child Health; Nihon University Itabashi Hospital; Tokyo Japan
9. Department of Paediatrics; Nagoya University Graduate School of Medicine; Nagoya Japan
10. Department of Paediatric Haematology/Oncology; Osaka City General Hospital; Osaka Japan
11. Department of Paediatrics; Osaka Red Cross Hospital; Osaka Japan
12. Department of Haematology/Oncology; Osaka Medical Centre and Research Institute for Maternal and Child Health; Osaka Japan
13. Department of Paediatrics; Kyushu University Hospital; Fukuoka Japan
14. Division of Haematology; Tokyo Metropolitan Cancer and Infectious Diseases Centre Komagome Hospital; Tokyo Japan
15. Human Health Sciences; Kyoto University; Kyoto Japan
16. Japanese Red Cross Kinki Block Blood Centre; Osaka Japan
17. Department of Haematology and Oncology; Children's Medical Centre; Japanese Red Cross Nagoya First Hospital; Nagoya Japan
18. Department of HSCT Data Management and Biostatistics; Nagoya University Graduate School of Medicine; Nagoya Japan