1. Children and Adolescent Oncology Department Gustave Roussy Cancer Campus, Paris‐Saclay University Villejuif France
2. Department of Biostatistics and Epidemiology Gustave Roussy Cancer Campus, Paris‐Saclay University Villejuif France
3. Department of Pathology Institut Universitaire du Cancer Toulouse Oncopole Toulouse France
4. Pediatric Oncology Bordeaux University Hospital Bordeaux France
5. Pediatric Oncology Rouen University Hospital Rouen France
6. Pediatric Hematology and Oncology IHOP Lyon France
7. Pediatric Oncology Toulouse University Hospital Toulouse France
8. Pediatric Oncology Nantes University Hospital Nantes France
9. Pediatric Oncology Angers University Hospital Angers France
10. Pediatric Hematology Lille University Hospital Lille France
11. Pediatric Oncology Nancy University Hospital Nancy France
12. Pediatric Hematology Robert Debré Hospital‐APHP Paris France