1. Leeds Institute of Cancer and Pathology; Leeds Institute of Oncology and St James's University Hospital; University of Leeds; Leeds UK
2. Klinikum Stuttgart; Center for Pediatric and Adolescent Medicine; Pediatrics 5 (Oncology, Hematology, Immunology); Olgahospital; Stuttgart Germany
3. Department of Children and Adolescents Oncology; Institut Gustave Roussy; Villejuif France
4. University Hospital Muenster; Department of Pediatric Hematology and Oncology; Westfalian Wilhelms University; Muenster Germany
5. Hospital Infantil Universitario Niño Jesús; Madrid Spain
6. Instituto Português de Oncologia de Lisboa; Lisbon Portugal
7. Teenage Cancer Trust; London UK
8. Semmelweis University; Budapest Hungary
9. Oxford University Clinical Academic Graduate School; Oxford UK
10. Department of Pediatrics; Skåne University Hospital; Clinical Sciences Lund University; Lund Sweden
11. Division of Pediatrics; Unit of Hematooncology; University Medical Centre Ljubljana; Ljubljana Slovenia
12. Charles University; Prague Czech Republic
13. Medical University of Varna; Varna Bulgaria
14. Children's University Hospital; Skubiszewski Medical University of Lublin; Lublin Poland
15. Department of Medical and Pediatric Oncology; Institut Curie; Paris France
16. Alder Hey Children's NHS Foundation Trust; Liverpool
17. Spanish Association of Adolescents and Young Adult with Cancer; London
18. Teenage Cancer Trust Unit; St James's University Hospital; Leeds UK
19. University of Athens School of Medicine; Athens Greece
20. Department of Oncology; Aarhus University Hospital; Aarhus C Denmark
21. Department of Pediatric Hemato-Oncology; University Hospitals Leuven; Leuven Belgium
22. Institute for Cancer Research; Oslo University Hospital; Oslo Norway
23. Department of Medical Oncology; Radboud University Medical Centre; Nijmegen the Netherlands
24. Pediatric Oncology Unit; Fondazione IRCCS Istituto Nazionale Tumori; Milan Italy