1. Department of Radiology Diakoniekrankenhaus Halle Halle (Saale) Germany
2. Department of Radiology University Hospital Halle (Saale) Halle (Saale) Germany
3. Department of Nuclear Medicine University of Leipzig Leipzig Germany
4. Institute of Medical Informatics, Statistics and Epidemiology (IMISE) University of Leipzig Leipzig Germany
5. Department of Pediatric Hematology and Oncology Justus‐Liebig University Gießen Germany
6. Sorbonne Université/APHP hôpital Trousseau Paris France
7. Department of Paediatric Oncology Royal Hospital for Sick Children, University of Edinburgh Edinburgh UK
8. Department of Medical Oncology and Radiotherapy Oslo University Hospital Oslo Norway
9. Department of Radiation Oncology Medical Faculty of the Martin‐Luther‐University Halle (Saale) Germany
10. Karolinska University Hospital Astrid Lindgrens Childrens Hospital Stockholm Sweden
11. Pediatric Onco‐Hematology Unit Hospital Universitario Virgen Macarena Sevilla Spain
12. Department of Pediatric Hematology and Oncology University Hospital Motol and Second Medical Faculty of Charles University Prague Czech Republic
13. Pediatric Oncology and Hematology Department University Children's Hospital of Krakow Krakow Poland
14. Department of Pediatric Hematology and Oncology St. Anna Children's Hospital, Medical University of Vienna Vienna Austria
15. Division of Pediatrics, Department of Woman‐Mother‐Child, Pediatric Hematology‐Oncology Unit University Hospital of Lausanne and University of Lausanne Lausanne Switzerland
16. Department of Pediatric Hematology and Oncology National Institute of Paediatric Diseases Bratislava Slovakia
17. Department of Pediatric Hematology and Oncology University Hospitals Leuven Leuven Belgium
18. Erasmus MC Sophia Children's Hospital Rotterdam The Netherlands
19. Princess Màxima Center for Pediatric Oncology Utrecht The Netherlands
20. Department of Radiation Oncology University Hospital Vienna Vienna Austria
21. Service d'Hématologie Pédiatrique Hôpital Robert‐Debré Paris France
22. Department Department of Pediatric Radiology University Bielefeld, Campus Bielefeld‐Bethel Bielefeld Germany
23. Department of Clinical Radiology University Hospital of Münster Münster Germany