1. Leukaemia Research Cytogenetics Group, Wolfson Childhood Cancer Research Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom;
2. Children’s Cancer Research Institute, St Anna Kinderkrebsforschung, Vienna, Austria;
3. INSERM Unité Mixte de Recherché 1131, Institut Universitaire d’Hématologie, Université Paris Diderot, Paris Sorbonne Cité, Paris, France;
4. Département de Génétique, Hôpital Robert Debré, Assistance Publique–Hôpitaux de Paris, Paris, France;
5. Department of Human Genetics, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Nijmegen, The Netherlands;
6. Department of Pediatric Oncology, Erasmus MC–Sophia Children’s Hospital, Rotterdam, The Netherlands;
7. Department of Pediatrics, University Hospital Schleswig-Holstein, Kiel, Germany;
8. Childhood Leukaemia Investigation Prague, Department of Pediatric Hematology/Oncology, 2nd Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic;
9. Children’s Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, Sydney, Australia;
10. Clinical Genetics Section, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden;
11. Department of Pediatric Hematology and Oncology, National Center for Child Health and Development, Tokyo, Japan;
12. Clinical Research Center, Nagoya Medical Center, National Hospital Organization, Aichi, Japan;
13. Division of Oncology and Hematology, Department of Pediatrics, Charité–Universitätsmedizin Berlin, Berlin, Germany;
14. Department of Hematology, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium;
15. Pediatric Oncology, Children’s Research Centre, University Children’s Hospital Zürich, Zürich, Switzerland;
16. Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil;
17. Centro Ricerca Tettamanti, Clinica Pediatrica, Università di Milano-Bicocca, Monza, Italy;
18. Department of Pediatrics, Oncology, Hematology and Diabetology, Medical University of Lodz, Lodz, Poland;
19. German Cancer Consortium and German Cancer Research Center, Heidelberg, Germany;
20. Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan;
21. Department of Pediatric Hematology and Oncology, Medical School Hannover, Hannover, Germany;
22. Department of Pediatric Hematology and Oncology, St Anna Children’s Hospital, Medical University of Vienna, Austria; and
23. Dutch Childhood Oncology Group, The Hague, The Netherlands