1. Oxford Transplant Centre, Nuffield Department of Surgical SciencesOxford University Hospitals, Churchill Hospital Oxford UK
2. Eurotransplant Reference Laboratory, Department of Immunohematology and Blood TransfusionLeiden University Medical Center Leiden the Netherlands
3. Department of Immunohematology and Blood transfusionLeiden University Medical Center Leiden the Netherlands
4. Hospital Clínic Barcelona Barcelona Spain
5. Transplant Immunology LaboratoryRoyal Liverpool and Broadgreen University Hospital Liverpool UK
6. Institute of Infection and Global HealthUniversity of Liverpool Liverpool UK
7. Department of ImmunogeneticsInstitute for Clinical and Experimental Medicine Prague Czech Republic
8. National Tissue Typing CenterGeneral Hospital of Athens “G. Gennimatas” Athens Greece
9. Organ Donation and TransplantationNHS Blood and Transplant Bristol UK