1. Department of Hematology Nancy University Hospital Vandoeuvre‐les‐Nancy France
2. Regional Centre of Pharmacovigilance Nancy University Hospital Vandoeuvre‐les‐Nancy France
3. Statistical Unit Pérouges France
4. Assistance Publique des Hôpitaux de Paris, Department of Pediatric Immuno‐hematology Necker Children Hospital Paris France
5. Assistance Publique des Hôpitaux de Paris, Department of Hematology La Pitié‐Salpêtrière Hospital Paris France
6. Department of Pediatric Hematology and Immunology, Robert Debré Academic Hospital GHU APHP Nord Université Paris Cité Paris France
7. Institute of Pediatric Hematology and Oncology (IHOPe) Hospices Civils de Lyon and Claude Bernard University Lyon France
8. Department of Pediatric Hematology Oncology University Hospital of Bordeaux Bordeaux France
9. Department of Hematology Nantes University Hospital Nantes France
10. Department of Pediatric Hematology, Hôpital Mère‐Enfant Nantes University Hospital Nantes France
11. Assistance Publique des Hôpitaux de Paris, Department of Hematology Saint‐Louis Hospital Paris France
12. Assistance Publique des Hôpitaux de Paris, Department of Hematology Henri Mondor Hospital and Université Créteil France
13. Department of Hematology, Allogeneic Stem Cell Transplantation Unit Lille University Hospital Lille France
14. Department of Hematology, Université Cote d'Azur Nice University Hospital Nice France
15. Hôpital Universitaire des Enfants de la Reine Fabiola, Department of Pediatric Hematology Brussels University Hospital Brussels Belgium
16. Cytometry Platform Nancy University Hospital Vandoeuvre‐les‐Nancy France
17. EFS La Plaine St Denis St Denis France
18. INCANS Department of Hematology Strasbourg France
19. Department of Hematology Bordeaux University Hospital Bordeaux France
20. Cell Therapy Unit Nancy University Hospital Vandoeuvre‐les‐Nancy France
21. EFS La Plaine St‐Denis France
22. Assistance Publique des Hôpitaux de Paris, Cell Therapy Unit, INSERM CICBT 501 Saint‐Louis Hospital Paris France
23. Assistance Publique des Hôpitaux de Paris, Department of Immunology and Histocompatibily Saint‐Louis Hospital Paris France
24. Department of Infectious and Tropical Diseases, and Toulouse Institute for Infectious and Inflammatory Diseases, INSERM UMR1291—CNRS UMR5051—Université Toulouse III Toulouse University Hospital Toulouse France
25. Department of Pediatric Hematology Nancy University Hospital Vandoeuvre‐les‐Nancy France
26. CNRS Unit UMR 7365 IMoPA Lorraine University Vandoeuvre‐les‐Nancy France