1. Hematology Division, Hospital Universitario y Politécnico La Fe, Valencia, Spain
2. CIBERONC, Instituto Carlos III, Madrid, Spain
3. Service d’Hématologie-Greffe, Hôpital Saint-Louis, Université Paris-Diderot, Paris, France
4. Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
5. University Hospital Basel, Basel, Switzerland
6. European Society for Blood and Marrow Transplantation Data Office Leiden, Leiden, The Netherlands
7. Unit of Blood Diseases and Stem Cell Transplantation, University of Brescia Azienda Socio Sanitaria Territoriale Spedali Civili di Brescia, Brescia, Italy
8. Hematology Division, Hospital Morales Meseguer, Murcia, Spain
9. Hematology Division, Hospital Clínico de Valencia, Valencia, Spain
10. Willem Alexander Children’s Hospital/Leiden University Medical Center, Leiden, The Netherlands
11. Hematology Division, Hospital Universitario de Salamanca, Salamanca, Spain
12. Hematology Division, Hospital Clínic, Barcelona, Spain
13. Turku University Hospital, Turku, Finland
14. Demiroglu Bilim University, Istanbul, Turkey
15. Hematology Division, Hospital de la Princesa, Madrid, Spain
16. Erciyes University, Faculty of Medicine, Erciyes Pediatric Bone Marrow Transplant Center, Kayseri, Turkey
17. King Abdulaziz Medical City, Riyadh, Saudi Arabia
18. University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
19. Hematology Division, Hospital Regional de Málaga, Malaga, Spain
20. Hematology Division, Instituto Catalan de Oncologia-Hospital Germans Trias i Pujol, Barcelona, Spain
21. Universita Cattolica S. Cuore, Rome, Italy
22. Radboud University Medical Center, Nijmegen, The Netherlands
23. Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation. Hannover Medical School, Hannover, Germany
24. Hacettepe University Children’s Hospital, Ankara, Turkey
25. Centre Hospitalier Lyon Sud, Hospices Civils de Lyon, Lyon, France
26. Children’s Hospital at Westmead, Sydney, Australia
27. Gazi University Faculty of Medicine, Ankara, Turkey
28. Pediatric Division, Niño Jesus Children’s Hospital, Madrid, Spain
29. Hospital Sirio-Libanes, São Paulo, Brazil
30. Children’s University Hospital Queen Fabiola, Université Libre de Bruxelles, Brussels, Belgium
31. University of Genoa (Dipartimento di Scienze della Salute) and Istituto Nazionale per la Ricerca sul Cancro Ospedale Policlinico San Martino, Genova, Italy
32. Department of Pediatric Hematology and Oncology, Collegium Medicum, Nicolaus Copernicus University Torun Uniwersytet Mikołaja Kopernika, University Hospital, Bydgoszcz, Poland