1. Niño Jesus Children's Hospital, Fundación para la investigación del HIUNJ Madrid Spain
2. IRRCS Ospedale Pediatrico Bambino Gesù Rome Italy
3. EBMT Statistical Unit Leiden Leiden The Netherlands
4. EBMT Data Office Leiden Leiden The Netherlands
5. King Faisal Specialist Hospital and Research Centre Riyadh Saudi Arabia
6. Pediatric Hematology/Oncology, Fondazione IRCCS Policlinico San Matteo Pavia Italy
7. Medical Park Antalya Hospital Antalya Turkey
8. Ege University Pediatric BMT Centre Izmir Turkey
9. Institut d'Hematologie et d'Oncologie Pediatrique, Hospices Civils de Lyon Lyon France
10. Hemato‐Immunology Department Robert‐Debre Hospital, GHU Nord‐Université de Paris Paris France
11. Inst. Português de Oncologia do Porto Porto Portugal
12. HSCT Unit, Instituto G. Gaslini Genoa Italy
13. Akdeniz University Medical School Antalya Turkey
14. Department of Pediatrics Leiden University Medical Center Leiden The Netherlands
15. Sezione di Ematologia Perugia Italy
16. Inst. Portugues Oncologia Lisbon Portugal
17. Clinica Pediatrica, Fondazione MBBM Universita degli Studi di Milano Bicocca Monza Italy
18. Pediatric Onco‐Hematology and Stem Cell Transplantation Division Regina Margherita Children's Hospital, University of Turin Turin Italy
19. Hospital Universitario Central de Asturias Oviedo Spain
20. Department for Pediatric Hematology and Hemopoietic Stem Cell Transplantation Central Hospital of Southern Pest – National Institute of Hematology and Infectious Diseases Budapest Hungary
21. Istituto Giannina Gaslini IRCSS Genova Italy
22. AORN San Giuseppe Moscati, Hematology and Hematopoietic Stem Cell Transplantation Unit Avellino Italy
23. Federico II University of Naples Naples Italy
24. Department of Pediatric Hematology, Oncology and Stem Cell Transplantation University of Regensburg Regensburg Germany
25. French Reference Center for Aplastic Anemia and Paroxysmal Nocturnal Hemoglobinuria Saint Louis Hospital and University Paris Diderot Paris France