Affiliation: | 1. Center for Clinical Transfusion Research, Sanquin Research, Leiden, The Netherlands;2. Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands;3. Department of Donor Studies, Sanquin Research, Amsterdam, The Netherlands;4. Department of Hematology, Radboudumc, Nijmegen, The Netherlands;5. Unit Transfusion Medicine, Sanquin Blood Bank, Amsterdam, The Netherlands;6. Department of Immuno‐hematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands |