1. Wellcome Sanger Institute, CB10 1SA Hinxton, UK.
2. Princess Máxima Center for Pediatric Oncology, Heidelberglaan 25, 3584 CS Utrecht, Netherlands.
3. UCL Great Ormond Street Institute of Child Health, WC1N 1EH London, UK.
4. Great Ormond Street Hospital for Children (GOSH), NHS Foundation Trust, NIHR Great Ormond Street Hospital Biomedical Research Centre, WC1N 3JH London, UK.
5. Hubrecht Institute, KNAW, 3584 CT Utrecht, Netherlands.
6. Institute of Cellular Medicine, Newcastle University, NE2 4HH Newcastle upon Tyne, UK.
7. Department of Dermatology and NIHR Newcastle Biomedical Research Centre, Newcastle Hospitals, NHS Foundation Trust, NE2 4LP Newcastle upon Tyne, UK.
8. MRC-WT Cambridge Stem Cell Institute, University of Cambridge, CB2 0QQ Cambridge, UK.
9. Department of Clinical Neurosciences, University of Cambridge, CB2 0QQ Cambridge, UK.
10. Department of Pathology, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, Netherlands.
11. Cambridge University Hospitals NHS Foundation Trust, CB2 0QQ Cambridge, UK.
12. Department of Paediatrics, University of Cambridge, CB2 0QQ Cambridge, UK.