Jessie S Luken1, Fikreta Danovic2, Masja de Haas3, Rianne Koopman4. 1. Consultant, Transfusion Medicine, Sanquin Blood Supply, Department of Transfusion Medicine and Sanquin Diagnostics, Department of Immunohematology Diagnostics. 2. Consultant, Transfusion Medicine, Sanquin Blood Supply, Department of Transfusion Medicine. 3. Sanquin Diagnostics, Laboratory Director of the Department of Immunohematology Diagnostics. 4. Internist, Consultant, Transfusion Medicine, Sanquin Blood Supply, Department of Transfusion Medicine, Amsterdam, the Netherlands.