1. Developmental Biology and Cancer & Teaching Department UCL Great Ormond Street Institute of Child Health London UK
2. Department of Histopathology NIHR Great Ormond Street Hospital Biomedical Research Centre and UCL London UK
3. Department of Paediatric Haematology and Oncology Great Ormond Street Hospital for Children NHS Foundation Trust London UK
4. Specialist Integrated Haematology and Malignancy Diagnostic Service‐Acquired Genomics Great Ormond Street Hospital for Children NHS Foundation Trust London UK
5. Beaumont Hospital Dublin Ireland
6. North East Thames Regional Clinical Genetics Service Great Ormond Street Hospital for Children NHS Foundation Trust London UK
7. Clinical & Experimental Sciences University of Southampton Southampton UK
8. Cellular Pathology University Hospital Southampton NHS Foundation Trust Southampton UK
9. Department of Histopathology University Hospitals Plymouth Plymouth UK