1. Department of Haematology, University of Cambridge, United Kingdom;
2. National Blood Service, Cambridge, United Kingdom;
3. Department of Experimental Immunohaematology, Sanquin Research at Central Laboratory for the Blood Transfusion Service (CLB), Amsterdam, The Netherlands;
4. Landsteiner Laboratory, Academic Medical Center (AMC), University of Amsterdam, The Netherlands;
5. Medical Research Council (MRC) Biostatistics Unit, Institute of Public Health, Cambridge, United Kingdom;
6. Domantis Limited, Cambridge, United Kingdom;
7. Microarray Facility, Wellcome Trust Sanger Institute, Cambridge, United Kingdom;
8. Department of Immunohematology–Blood Transfusion, Leiden University Medical Centre, Leiden, The Netherlands;
9. Department of Hematology, Amsterdam Medical Centre, University of Amsterdam, The Netherlands