1. SCT‐Unit St. Anna Children’s Hospital Medical University Vienna Vienna Austria
2. Stem Cell Transplantation Department Great Ormond Street Hospital London UK
3. Division of Pediatric Hematology, and Oncology Department of Pediatrics and Adolescent Medicine Medical Centre University of Freiburg Freiburg im Breisgau Germany
4. Hemato‐Immunology Department Robert Debré Hospital Paris France
5. Immuno‐Hematology Unit Robert Debré Hospital Paris 7 – Paris Diderot University Paris France
6. Clinica Pediátrica Università degli Studi di Milano Bicocca Monza Italy
7. Brenda E.S. Gibson Royal Hospital for Sick Children Glasgow UK
8. Servicio de Hematologia y Oncologia Pediátrica Hospital Vall d'Hebron Barcelona Spain
9. Department of Pediatric Oncology, Hematology and Transplantology University of Medical Sciences Poznan Poland
10. EBMT Pediatric Diseases Working Party Office, Hematology and Cell Therapy Department Saint‐Antoine Teaching Hospital Paris France
11. Hospital for Children & Adolescents University of Helsinki Helsinki Finland
12. Department of Pediatric Haematology Oncology and BMT Unit Sackler Faculty of Medicine Schneider Children’s Medical Center of Israel Tel Aviv University Tel Aviv‐Yafo Israel
13. Pediatric Hematology, Oncology and Stem Cell Transplantation Ghent University Hospital Ghent Belgium
14. Division for Stem Cell Transplantation University Children's Hospital Frankfurt/Main Germany
15. Division of Pediatric Stem Cell Therapy Clinic for Pediatric Oncology, Hematology and Clinical Immunology Medical Faculty Heinrich‐Heine‐University Duesseldorf Germany
16. Department of Pediatric Hematology, Oncology and Stem Cell Transplantation University of Hospital Regensburg Regensburg Germany