1. Princess Máxima Center for Pediatric Oncology Utrecht the Netherlands
2. Department of Population Sciences City of Hope National Medical Center Duarte California USA
3. Department of Epidemiology and Cancer Control St. Jude Children's Research Hospital Memphis Tennessee USA
4. Department of Oncology St. Jude Children's Research Hospital Memphis Tennessee USA
5. Cochrane Childhood Cancer Amsterdam the Netherlands
6. St Anna Childrens Hospital Vienna Austria
7. Kepler University Clinic Med Campus IV Linz Austria
8. Department for Pediatric Hematology and Oncology University Hospital Bonn Bonn Germany
9. Department for Pediatric Hematology and Oncology CHU Nord University Hospital Saint‐Etienne Saint‐Priest en Jarez France
10. Epidemiology of Childhood and Adolescent Cancers, CRESS, INSERM, UMR 1153 Paris Descartes University Villejuif France
11. Infectious Diseases Unit IRCCS Istituto Giannina Gaslini Genova Italy
12. Rutgers Cancer Institute of New Jersey The State University of New Jersey New Brunswick New Jersey USA
13. Institute for Endocrinology and Diabetes University of Luebeck Ratzeburger Allee 160 Luebeck 23562 Germany
14. Emory University School of Medicine Aflac Cancer and Blood Disorders Center Atlanta Georgia USA
15. Department of Paediatric Oncology, Leeds Teaching Hospitals NHS Trust and Leeds Institute of Medical Research University of Leeds Leeds LS2 9JT UK
16. Infectious Disease Research Program Center for Bone Marrow Transplantation and Department of Pediatric Hematology/Oncology University Children's Hospital Münster Germany
17. NHMRC National Centre for Infections in Cancer, Sir Peter MacCallum Department of Oncology University of Melbourne Parkville Victoria Australia
18. Department of Infectious Diseases Peter MacCallum Cancer Centre and Royal Children's Hospital Parkville Victoria Australia
19. Murdoch Children's Research Institute Parkville Victoria Australia
20. Dutch Childhood Cancer Parent Organization VOKK Netherlands Department VOX Survivors Nieuwegein the Netherlands
21. Epidemiology and Biostatistics Unit and DOPO clinic IRCCS Istituto Giannina Gaslini Genova Italy
22. Lund University Skane University Hospital, Department of Clinical Sciences Lund, Pediatrics Lund Sweden
23. Department of Pediatric Hematology/Oncology Okinawa Prefectural Nanbu Medical Center and Children's Medical Center Okinawa Japan
24. University Hospital Brno and St. Anna University Hospital/ICRC Masaryk University Brno Czech Republic
25. University Hospital for Children and Adolescents Pediatric Oncology and Hematology Ratzeburger Allee 160 Luebeck 23562 Germany
26. Department of Pediatrics Nippon Medical School Tokyo Japan
27. Department of Health Sciences and Medicine University of Lucerne, Lucerne Switzerland
28. The Hospital for Sick Children Toronto Canada
29. Department of Malignant Haematology Great Ormond Street Hospital for Children NHS Trust London UK
30. St. Luke's International University Tokyo Japan
31. Department of Oncology, Division of Psychosocial Oncology University of Calgary Calgary AB Canada
32. Division of Haematology/Oncology The Hospital for Sick Children Toronto Canada
33. Department of Pediatric Oncology University of Groningen, University Medical Center Groningen Groningen the Netherlands
34. Department of Pediatric Hematology and Oncology University Hospitals Leuven Leuven Belgium
35. Childhood Cancer Registry (ChCR), Institute for Social and Preventive Medicine University of Bern Bern Switzerland
36. Department of Paediatric and Adolescent Haematology/Oncology, Great North Children's Hospital, and Clinical and Translational Research Institute, Newcastle University Centre for Cancer Newcastle University Newcastle upon Tyne UK
37. Amsterdam University Medical Center, Department of Pediatrics Amsterdam the Netherlands