1. Department of Pathology Sidra Medicine and Weill Cornell Medicine‐Qatar Doha Qatar
2. Department of Pathology Oslo University Hospital, Rikshospitalet Oslo Norway
3. Department of Hematology and Oncology University of Saarland Homburg Germany
4. Department of Pathology University of Bonn Bonn Germany
5. Developmental Biology and Cancer Programme UCL Great Ormond Street of Child Health, University College London London UK
6. Department of Haematology and Oncology Great Ormond Street Hospital for Children NHS Foundation Trust London UK