1. Division of Genetics & Epidemiology, Institute of Cancer Research and Royal Marsden Hospital, Sutton, UK
2. The Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, UK
3. Division of Molecular Pathology, Institute of Cancer Research and Royal Marsden Hospital, Sutton, UK
4. Department of Paediatric Oncology, Our Lady's Children's Hospital, Dublin, Ireland
5. Department of Paediatric Oncology, Sheffield Children's Hospital, Sheffield, UK
6. Department of Paediatric Oncology, Royal Victoria Infirmary, Newcastle Upon Tyne, UK
7. Department of Paediatric Oncology, Southampton General Hospital, Southampton, UK
8. Department of Genetics, Hospital Universitario La Paz, Madrid, Spain
9. Department of Haematology/Oncology, Great Ormond Street Hospital, London, UK
10. Regional Paediatric Oncology Unit, St James's University Hospital, Leeds, UK
11. Department of Paediatric Oncology, Alder Hey Children's Hospital, Liverpool, UK
12. Schiehallion Unit, Royal Hospital for Sick Children, Glasgow, UK
13. Department of Paediatric Oncology, Children's Hospital for Wales, Cardiff, UK
14. Department of Paediatric Oncology, Addenbrooke's NHS Trust, Cambridge, UK
15. Department of Paediatric Pathology, Royal Manchester Children's Hospital, Manchester, UK
16. Department of Histopathology, School of Medicine, Cardiff University, Cardiff, UK
17. Department of Histopathology, Great Ormond Street Hospital, London, UK
18. Pediatric Hematology, Stollery Children's Hospital, Edmonton, Canada
19. Childhood Cancer Research Group, Department of Paediatrics, University of Oxford, Oxford, UK
20. Molecular Haematology and Cancer Biology Unit, University College London, Institute of Child Health, London, UK