1. Center for Clinical Transfusion Research; Sanquin Research; Leiden The Netherlands
2. Department of Clinical Epidemiology; Leiden University Medical Center; Leiden The Netherlands
3. Biomedical sciences; Leiden University Medical Center; Leiden The Netherlands
4. Department of Immuno-hematology and Blood Transfusion; Leiden University Medical Center; Leiden The Netherlands
5. Department of Transfusion Medicine; Sanquin Blood Bank; Amsterdam The Netherlands
6. Department of Donor Studies; Sanquin Research; Amsterdam The Netherlands