1. Childhood Cancer Research Group, Institute of Social and Preventive Medicine University of Bern Bern Switzerland
2. Center for Primary Care and Public Health (Unisanté) University of Lausanne Lausanne Switzerland
3. Division of Pediatric Oncology/Hematology, University Children's Hospital Basel University of Basel Basel Switzerland
4. Division of Pediatric Oncology and Hematology, Department of Women, Child and Adolescent, University Geneva Hospitals, Cansearch Research platform for pediatric oncology and hematology, Faculty of Medicine, Department of Pediatrics, Gynecology and Obstetrics University of Geneva Geneva Switzerland
5. Department of Epidemiology and Cancer Control St. Jude Children's Research Hospital Tennessee Memphis USA
6. Pediatric Hematology‐Oncology Unit University Hospital (CHUV) Lausanne Switzerland
7. Department of Radiation Physics The University of Texas MD Anderson Cancer Center Houston Texas USA
8. Fred Hutchinson Cancer Center Washington Seattle USA
9. Aflac Cancer Center Children's Healthcare of Atlanta/Emory University Atlanta Georgia USA
10. Division of Pediatric Hematology and Oncology, University Children's Hospital Bern University of Bern Bern Switzerland
11. Division of Cancer Control and Population Sciences National Cancer Institute Rockville Maryland USA
12. Department of Medicine Duke University and Duke Cancer Institute Durham North Carolina USA