1. Paediatric Haematology and Oncology; Azienda Ospedaliera Universitaria Integrata; Verona Italy
2. Hôpital St. Louis Dept.of Haematology - BMT University Paris VII-Paris Diderot; Paris France
3. Clinica di Oncoematologia Pediatrica Dipartimento di Pediatria; Padova Italy
4. Dept of Haematology; University Hospital; Uppsala Sweden
5. Paediatric Haematology; Regina Margherita Hospital; Torino Italy
6. Hôpital Claude Huriez Service de Maladies du Sang; Lille Cedex France
7. St. George's Hospital Department of Haematology; London UK
8. Medical University of Silesia; Univ. Dept. of Haematology and BMT; Katowice Poland
9. Dept. of Haematology; University Hospital Gasthuisberg; Leuven Belgium
10. Divisione di Ematologia; Ospedali Riuniti di Bergamo; Bergamo Italy
11. Paediatric Haematology and Oncology; Department of Paediatrics and Adolescent Medicine; University Medical Centre; Freiburg Germany
12. Programme de Transplantation &Therapie Cellulaire; Centre de Recherche en Cancérologie de Marseille; Institut Paoli Calmettes; Marseille France
13. Federal Research Centre for Paediatric Haematology, Oncology and Immunology; Moscow Russia
14. Department of Haematological Medicine; King's College Hospital/King's College London; London UK
15. Paediatric Haematology; Institute G. Gaslini; Genova Italy