1. Center for Clinical Transfusion Research; Sanquin Research; Leiden The Netherlands
2. Department of Immunohaematology and Blood Transfusion; Leiden University Medical Center; Leiden The Netherlands
3. Department of Clinical Epidemiology; Leiden University Medical Center; Leiden The Netherlands
4. Department of Immunohaematology Diagnostics; Sanquin; Amsterdam The Netherlands
5. Department of Clinical Chemistry and Haematology; University Medical Center Utrecht; Utrecht The Netherlands
6. Department of Clinical Chemistry and Haematology; Catharina Hospital; Eindhoven The Netherlands
7. Department of Haematology; VU Medical Center; Amsterdam The Netherlands
8. Department of Clinical Chemistry and Haematology; Jeroen Bosch Hospital; ‘s-Hertogenbosch The Netherlands
9. LabWest; Haga Teaching Hospital; The Hague The Netherlands