1. Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle, United Kingdom;
2. Hematology-Oncology Department, Hospital de Pediatría “Prof. Dr. J. P. Garrahan,” Buenos Aires, Argentina;
3. Department of Pediatric Hematology and Oncology, St. Anna Children’s Hospital, Medical University of Vienna, Vienna, Austria;
4. Department of Molecular Medicine and Surgery, Clinical Genetics Section, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden;
5. Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands;
6. Department of Pathology, Medical University of Lodz, Lodz, Poland;
7. Cancer Center for Children, Sydney Childrens Hospital Network, Westmead, NSW, Australia;
8. Pediatric Hematology Oncology, Schneider Children’s Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel;
9. Division of Clinical Research, Research Centre, Instituto Nacional de Câncer, Rio de Janeiro, Brazil;
10. Regional Children’s Hospital 1, Ekaterinburg, Russia;
11. Research Institute of Medical Cell Technologies, Ekaterinburg, Russia;
12. Childhood Leukaemia Investigation, Prague, Czech Republic;
13. Department of Paediatric Haematology/Oncology, 2nd Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic;
14. 2nd Department of Paediatrics, Semmelweis University, Budapest, Hungary;
15. Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden;
16. Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Japan;
17. Department of Pediatrics, Kyoto Prefectural University of Medicine, Kyoto, Japan;
18. Cancer Cytogenetic Laboratory, Schneider Children’s Medical Center of Israel, Petah Tikva, Israel;
19. Department of Pediatrics, Oncology and Hematology, Medical University of Lodz, Lodz, Poland;
20. Children’s Cancer Research Institute, St. Anna Kinderkrebsforschung, Vienna, Austria;
21. Dutch Childhood Oncology Group, Utrecht, The Netherlands;
22. 1st Department of Medicine, Semmelweis University, Budapest, Hungary;
23. Pediatric Haematology-Oncology Program, Research Centre, Instituto Nacional de Câncer, Rio de Janeiro, Brazil;
24. Children’s Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, Sydney, NSW, Australia; and
25. Department of Haematology, Great Ormond Street Hospital, London, United Kingdom