1. Bone Marrow Transplantation (BMT) Unit, Saint Louis Hospital, Assistance Publique—Hôpitaux de Paris (AP-HP), Paris, France;
2. University Paris Diderot, Paris, France;
3. French Reference Center for Aplastic Anemia and Paroxysmal Nocturnal Hemoglobinuria, Saint-Louis Hospital, Paris, France;
4. Severe Aplastic Anemia Working Party of the European Group for Blood and Marrow Transplantation, Leiden, The Netherlands;
5. Biostatistic Unit, Saint Louis Hospital, AP-HP, Paris, France;
6. Pediatric BMT Unit, Bordeaux University Hospital, Bordeaux, France;
7. Pediatric BMT Unit, Montpellier, France;
8. Pediatric BMT Unit, Marseille, France;
9. BMT Unit, Saint Antoine Hospital, AP-HP, Paris, France;
10. Department of Pediatric Hematology and Oncology, Istituto Di Ricovera e Cura a Carattere Scientifico (IRCCS) Bambino Gesù Pediatric Hospital, Rome, Italy;
11. Pediatric BMT Unit, Rennes, France;
12. BMT Unit, Lucien Neuwirth Oncology Institute, Saint-Priest-en-Jarez, France;
13. Pediatric BMT Unit, Nantes, France;
14. Pediatric BMT Unit, Robert-Debré, AP-HP, Paris, France;
15. BMT and Cell Therapy Unit, Bordeaux, France;
16. Pediatric BMT Unit, Lille, France;
17. Pediatric BMT Unit, Strasbourg, France;
18. Pediatric BMT Unit, Nice, France;
19. BMT Unit, Marseille, France;
20. BMT Unit, Nancy, France;
21. BMT Unit, Clermont-Ferrand, France;
22. Sorbonne University, Paris, France;
23. INSERM Unité Mixte de Recherche 938, Paris, France;
24. Cell Therapy Unit, Saint Louis Hospital, AP-HP, Paris, France;
25. INSERM Clinical Investigation Center–Biological Therapy (Centre d'investigation clinique en biothérapie; CBT501), Paris, France; and
26. Eurocord, Saint Louis Hospital, AP-HP, Paris, France