1. Department of Pediatric Oncology Institut d'Hemato‐oncologie Pediatrique Lyon France
2. SIREDO Oncology Center (Care Innovation and Research for Children Adolescents and young Adults with Cancer) Institut Curie PSL University Paris France
3. Pediatric and Adolescents Oncology Unit Anti‐Cancer Center Oscar Lambret Lille France
4. Pediatric Hematology‐Oncology Unit Pellegrin Hospital CHU Bordeaux Bordeaux France
5. CHU de Nancy‐Hôpital de Brabois Service d'hémato‐oncologie pédiatrique Vandoeuvre‐lès‐Nancy Cedex Nancy France
6. Department of Pediatric Oncology Timone Children's Hospital. Marseille France
7. Department of Pediatric Oncology University Hospital Center of Rouen. Rouen France
8. Department of Pediatric Oncology University Hospital Center of Nantes. Nantes France
9. Department of Paediatric Hemato‐oncology University Hospital Leuven Belgium
10. Department of Pediatric Surgery Hôpital Femme Mère Enfant Lyon France
11. Department of Medical Oncology Centre Léon Bérard Lyon France
12. Department of Clinical Research and Innovation Centre Léon Bérard Lyon France
13. CHU de Lyon Institut Multisite de Pathologie France
14. Department of Children and Adolescent Oncology Gustave Roussy, Université Paris‐Saclay Paris‐Saclay University, Paris‐Sud University, CESP, INSERM Villejuif France
15. Statistical Unit, Clinical Research Department Centre Léon Bérard Lyon France