1. Department of Paediatric Oncology Great Ormond Street Hospital for Children NHS Foundation Trust London UK
2. Department of Pediatric Oncology Prinses Maxima Centrum Utrecht The Netherlands
3. Department of Pediatric Oncology and Childhood Cancer Research Unit Karolinska Institutet Stockholm Sweden
4. Pediatric Hematology and Oncology Geneva University Hospital Geneva Switzerland
5. Paediatric Oncology Our Lady's Children's Hospital Dublin Ireland
6. Division of Oncology Cincinnati Children's Hospital Medical Center Cincinnati Ohio USA
7. Department of Pediatric Audiology Oregon Health and Science University Portland Oregon USA
8. Department of Paediatrics and Child Health Stellenbosch University Stellenbosch South Africa
9. Department of Pediatric Oncology Oregon Health and Science University Portland Oregon USA
10. Department of Statistics International Breast Cancer Study Group Bern Switzerland
11. Children's Cancer and Blood Disorders Center Dana Farber Cancer Institute Boston Massachusetts USA
12. Department of Pediatric Oncology Agia Sofia Children's Hospital Athens Greece
13. Department of Paediatric Audiology Great Ormond Street Hospital for Children NHS Foundation Trust London UK
14. Radiation Oncology, Knight Cancer Institute Oregon Health and Science University Portland Oregon USA
15. Division of Pediatric Neuro‐Oncology The Hospital for Sick Children Toronto Ontario Canada
16. Children's Cancer Centre and Department of Paediatric Oncology Royal Children's Hospital Melbourne Victoria Australia