1 Department of Immunohematology Diagnostics, Sanquin Diagnostic Services, Amsterdam.
2 Sanquin Research, Department of Experimental Immunohematology and Landsteiner Laboratory, Amsterdam UMC, University of Amsterdam, Amsterdam.
3 Sanquin Research, Center for Clinical Transfusion Research and Jon J van Rood Center for Clinical Transfusion Science, Leiden University Medical Center, Leiden.
4 Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leide the Netherlands.
5 Sanquin Research, Department of Experimental Immunohematology and Landsteiner Laboratory, Amsterdam UMC, University of Amsterdam, Amsterdam r.kapur@sanquin.nl.