1. Département de Biologie et Pathologie Médicale, Service de Pharmacologie Gustave Roussy Villejuif France
2. Département de Biostatistiques Gustave Roussy Villejuif France
3. Clinical Pharmacokinetics Department Pierre Fabre Research Institute Toulouse France
4. Pediatric Immunology and Hematology Department Hôpital Necker Enfants‐Malades Paris France
5. Pharmacy Department Hôpital Necker Enfants‐Malades Paris France
6. Département de Cancérologie de l'enfant et l'adolescent Gustave Roussy Villejuif France
7. Hemato‐immunology Department Robert Debré Hospital Paris France
8. Department of Pediatric Hematology La Timone Hospital Marseille France
9. Pharmacy Department La Timone Hospital Marseille France
10. Biology Department Strasbourg Universitary Hospital Strasbourg France
11. Department of Pediatrics University Children's Hospital Lille France
12. Department of Paediatric Haematology/Oncology University Hospital of Rennes Rennes France
13. Paediatric Oncology and Haematology Unit Charles Nicolle Rouen University Hospital Rouen France
14. Department of Pediatric Oncology and Hematology Hôpital Pellegrin Bordeaux France
15. Direction de la Recherche Gustave Roussy Villejuif France
16. Université Paris‐Saclay School of Pharmacy F‐92296 Chatenay‐Malabry France