1. Institute of Biostatistics and Clinical Research, University of Muenster, Muenster, Germany
2. Department of Medical Oncology, Leiden University Medical Center, Leiden, the Netherlands
3. Department of Solid Tumors, Princess Máxima Center for Pediatric Oncology, Utrecht, the Netherlands
4. Department of Pediatric Haematology and Oncology, Cliniques Universitaires Saint Luc, Université Catholique de Louvain, Brussels, Belgium
5. Department of Pediatric Hematology and Oncology, University Children's Hospital Muenster, Muenster, Germany
6. Charles University, Motol Children's Hospital, Prague, Czech Republic
7. Department of Pediatrics/Oncology, Emma Children's Hospital, University of Amsterdam, Amsterdam, the Netherlands
8. Pediatric Hematology and Oncology, University Hospital Eppendorf, Hamburg, Germany
9. Department of Oncology and Surgical Oncology for Children and Youth, Mother and Child Institute, Warsaw, Poland
10. Childhood Cancer Center, Queen Silvia Children's Hospital, Gothenburg, Sweden
11. Bone Tumor Reference Center at the Institute of Medical Genetics and Pathology, University Hospital Basel and University of Basel, Basel, Switzerland
12. Department of Internal Medicine V, Heidelberg University Hospital, Heidelberg, Germany
13. Department of Radiation Oncology, University Hospital Muenster, Muenster, Germany
14. Pediatric Hematology and Oncology, University Hospital Leuven Gasthuisberg, Leuven Belgium
15. Head of the Pediatric Oncology and Transplantation Unit, Velkey László Child's Health Center, Borsod-Abaúj-Zemplén County University Teaching Hospital, Miskolc, Hungary
16. 2nd Department of Pediatrics, Semmelweis University, Budapest, Hungary
17. Department of Pediatrics and Children's Cancer Research Center (CCRC), Technische Universität München, Munich, Germany
18. British Columbia Cancer Research Centre, Vancouver, BC, Canada
19. Department of Pathology, Leiden University Medical Center, Leiden, the Netherlands
20. Douglass Hanly Moir Pathology, Macquarie Park, Australia
21. Department of Oncology and Palliative Care, Helios Klinikum Berlin-Buch, Berlin, Germany
22. Clinic of Orthopedics, University Hospital Essen, West German Cancer Centre, Essen, Germany
23. Department of Oncology and Hematology, University Children's Hospital Basel, Basel, Switzerland
24. Department of Medicine A, Hematology, Oncology and Pneumology, University Hospital Muenster, Muenster, Germany
25. Department of Thoracic Surgery, Ruhrlandklinik, University Hospital Essen, Essen, Germany
26. Department of Pediatrics, St Anna Children's Hospital and Children's Cancer Research Institute, Medical University of Vienna, Vienna, Austria
27. Centre for Clinical Trials (ZKS) Muenster, University of Muenster, Muenster, Germany
28. Department of Pediatric Hematology, Oncology and Hematopoietic Stem Cell Transplantation, Princess Elisabeth Children's Hospital, Ghent University, Ghent, Belgium
29. Department of Medical Oncology, Sarcoma Center, University of Duisburg-Essen, Essen, Germany
30. West German Cancer Centre (WTZ) Network, Essen and Muenster, Germany
31. Department of Orthopaedics, Semmelweis University, Budapest, Hungary
32. General Pediatrics, Oncology and Hematology, Vestische Kinder und Jugendklinik Datteln, Witten/Herdecke University, Datteln, Germany
33. Chris O'Brien Lifehouse, Camperdown, Australia
34. Sydney Medical School, University of Sydney, Sydney, Australia
35. Paediatrics III, University Hospital Essen, Essen, Germany
36. German Consortium for Translational Cancer Research (DKTK), German Cancer Research Centre, Essen, Germany
37. Department of Particle Therapy, University Hospital Essen, West German Proton Therapy Centre Essen (WPE), Essen, Germany
38. Center for Pediatric Oncology and Hematology, Vilnius University Hospital Santaros Klinikos, Vilnius, Lithuania
39. Institute of Clinical Medicine, Vilnius University, Vilnius, Lithuania
40. Department of Clinical Radiology, Klinikum Ibbenbüren, Ibbenbüren, Germany
41. Hematology and Stem Cell Transplantation, New Children's Hospital, HUS Helsinki University Hospital, University of Helsinki, Helsinki, Finland
42. Department of Pediatrics, University Hospital Erlangen, Erlangen, Germany
43. Division of Translational Pathology, Gerhard-Domagk-Institute of Pathology, University Hospital Muenster, Muenster, Germany
44. Department of Clinical Sciences, Skåne University Hospital, Lund, Sweden
45. Department of Medical Oncology, Chris O'Brien Lifehouse, Sydney, Australia
46. Faculty of Medicine and Health, University of Sydney, Sydney, Australia