1. Princess Máxima Center for Pediatric Oncology Utrecht The Netherlands
2. Department of Hematology Radboud University Medical Center, Radboud Institute for Health Sciences Nijmegen The Netherlands
3. Population Health Sciences Institute, Centre for Cancer Newcastle University Newcastle upon Tyne UK
4. Center for Preventive Medicine and Digital Health, Department for Prevention, Medical Faculty Mannheim Heidelberg University Mannheim Germany
5. Department of Pediatric Oncology and Hematology Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin Berlin Germany
6. St Anna Children's Hospital Vienna Austria
7. Department of Pediatric and Adolescent Medicine Kepler University Clinic Linz Austria
8. Childhood Cancer Research Group, Danish Cancer Society Research Center Copenhagen Denmark
9. Department of Clinical Medicine and Faculty of Health Aarhus Universitet Aarhus Denmark
10. DOPO clinic, Department of Hematology/Oncology IRCCS Istituto Giannina Gaslini Genoa Italy
11. International Clinical Research Center St. Anne's University Hospital Brno Brno Czech Republic
12. Childhood Cancer International Europe Vienna Austria
13. Institute of Social and Preventive Medicine, University of Bern Bern Switzerland
14. Faculty of Health Sciences and Medicine University of Lucerne Lucerne Switzerland
15. PanCare Bussum The Netherlands
16. Great North Children's Hospital, Royal Victoria Infirmary Newcastle Upon Tyne UK
17. Translational and Clinical Research Institute, Wolfson Childhood Cancer Research Centre Newcastle Upon Tyne UK
18. Department of Oncology, Paediatric Oncology, KU Leuven, Department of Paediatric Haematology and Oncology University Hospitals Leuven Leuven Belgium
19. Department of Paediatrics Emma Children's Hospital Amsterdam The Netherlands
20. Faculty of Medicine Utrecht University and Utrecht Medical Center Utrecht The Netherlands