1. Paediatric Haematology and Oncology Department University Hospital La Paz Madrid Spain
2. Translational Research in Paediatric Oncology Haematopoietic Transplantation and Cell Therapy University Hospital La Paz Institute for Health Research ‐ IdiPAZ Madrid Spain
3. The Great North Children's Hospital Newcastle upon Tyne Hospitals NHS Foundation Trust Newcastle upon Tyne UK
4. Wolfson Childhood Cancer Research Centre Translational and Clinical Research Institute Newcastle University Newcastle upon Tyne UK
5. MRC Weatherall Institute of Molecular Medicine University of Oxford John Radcliffe Hospital Oxford UK
6. Bone Marrow Transplantation Great Ormond Street Hospital for Children London UK
7. Liver Unit Birmingham Women's and Children's Hospital NHS Foundation Trust Birmingham UK
8. Department of Paediatric Oncology University Hospital La Fe Valencia Spain
9. Epidemiology and Statistics University Hospital La Paz Madrid Spain
10. The Royal Marsden Hospital, Sutton London UK