1. Bone Marrow Transplant Department; Great Ormond Street Hospital NHS Trust; London UK
2. Eurocord, Hôpital Saint Louis; Paris France
3. Monacord, Centre Scientifique de Monaco; Monaco Monaco
4. Department of Paediatric Haematology and Oncology; Instituto di Ricovero e Cura a Carattere Scientifico (IRCCS) “Bambino Gesù” Children's Hospital; Rome Italy
5. Department of Paediatric Sciences; University of Pavia; Pavia Italy
6. Paediatric Blood and Marrow Transplantation Programme; Paediatric Blood and Marrow Transplantation Programme University Hospital Utrecht; Utrecht The Netherlands
7. Department of Paediatric Haematology and Oncology; King Faisal Specialist Hospital and Research Centre; Riyadh Saudi Arabia
8. Paediatric Haematology Oncology; Fondazione IRCCS Policlinico San Matteo; Pavia Italy
9. Department of Paediatric Haematology and Oncology; Hopital d‘Enfants de la Timone, CHU; Marseille France
10. Department of Paediatric Haematology and Oncology; University Hospital Motol; Prague Czech Republic
11. Department of Paediatrics; Leiden University Medical Centre; Leiden The Netherlands
12. Haematology, Transfusion and Cell therapy service; Universidade de São Paulo; São Paulo Brazil
13. Haematology Unit; Churchill Hospital; University of Oxford; Oxford UK