1. Hematology Transplantation, AP-HP, Hospital Saint Louis; University Paris VII Denis Diderot and Inserm UMR 1160; Paris France
2. Institute of Transfusion Medicine; University of Ulm Ulm and Institute of Clinical Transfusion Medicine and Immunogenetics, German Red Cross Blood Transfusion Service Baden-Württemberg-Hessen and University Hospital Ulm; Ulm Germany
3. Department of Hematology; Radboud UMC; Nijmegen the Netherlands
4. Institution of Children Hematology and Transplantation; St. Petersburg Russia
5. University Hospital Essen; Essen Germany
6. Kings College Hospital; London UK
7. Seoul St. Mary's Hospital; Seoul Korea
8. Laura and Isaac Perlmutter Cancer Center; NYU Langone Medical Center, New York VA Medical Center; USA
9. St James's University Hospital; Leeds UK
10. Johns Hopkins University Medical Center; USA
11. Hospital Clínic Barcelona; Barcelona Spain
12. Royal Melbourne Hospital; Melbourne Victoria Australia
13. Alexion Pharmaceuticals; New Haven Connecticut USA