1. Stem Cell Transplantation Unit - Haematology-Oncology Department; G. Gaslini Children's Research Institute; Genova Italy
2. Stem Cell Transplantation Unit; St Anna Children's Hospital; Vienna Austria
3. Haematology Unit - Haematology-Oncology Department; G. Gaslini Children's Research Institute; Genova Italy
4. Clinica Pediatrica Università degli Studi di Milano Bicocca; Ospedale San Gerardo; Monza Italy