1. Great North Children’s Hospital, Queen Victoria Road, Newcastle upon Tyne NE1 4LP, UK
2. Wolfson Childhood Cancer Research Centre, Newcastle University Centre for Cancer, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
3. Pediatric Hematology and Oncology Department, Hôpital Pour Enfants de La Timone, AP-HM, 13005 Marseille, France
4. Centre de Recherche en Cancérologie de Marseille, SMARTc Unit, Inserm U1068, Aix Marseille University, 13005 Marseille, France
5. Pediatric Radiotherapy Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy
6. Pediatric Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy
7. Cancer Research UK Clinical Trials Unit, University of Birimingham, Birmingham B15 2TT, UK
8. Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany