1. Direction of Clinical ResearchGustave Roussy and Université Paris‐SudVillejuifFrance
2. SIOP‐Europe OfficeBrusselsBelgium
3. University Medical Centre Schleswig‐HolsteinCampus KielKielGermany
4. Union Nationale des Associations de Parents d'Enfants atteints de Cancer ou Leucémie (Unapecle)MontpellierFrance
5. International Confederation of Childhood Cancer Parent Organizations (ICCPO)NieuwegeinThe Netherlands
6. Department of Paediatric HaematologyOncology and TransplantologyMedical UniversityLublinPoland
7. Children's Brain Tumour Research CentreFaculty of Medicine and Health SciencesUniversity of NottinghamNottinghamUnited Kingdom
8. Department of PaediatricsSkåne University HospitalClinical SciencesLund UniversityLundSweden
9. Division of Paediatric OncologyPoliclinico Universitario “A. Gemelli”RomaItaly
10. University College London Institute of Child HealthLondonUnited Kingdom
11. Centre of Biostatistics for Clinical EpidemiologyDepartment of Health ScienceUniversity of Milano‐BicoccaMonzaItaly
12. School of MedicineUniversity of Belgrade, and University Children's HospitalBelgradeSerbia
13. Department of PaediatricsAarhus University Hospital SkejbyAarhusDenmark
14. Cancer Research UK Clinical Trials Unit (CRCTU)School of Cancer SciencesUniversity of BirminghamBirminghamUnited Kingdom
15. Children's Cancer Research InstituteSt. Anna Kinderkrebsforschung e.V.Children's Cancer Research InstituteWienAustria