1. Department of Donor Studies; Sanquin Research; Amsterdam The Netherlands
2. Landsteiner Laboratory; Academic Medical Centre; Amsterdam The Netherlands
3. Coronel Institute of Occupational Health; Academic Medical Center; Amsterdam The Netherlands
4. Center for Clinical Transfusion Research; Sanquin Research; Amsterdam The Netherlands
5. Department of Clinical Epidemiology; Leiden University Medical Center; Leiden The Netherlands
6. Department of Sociology; VU University; Amsterdam The Netherlands
7. Department of Social Medicine; Academic Medical Center; Amsterdam The Netherlands
8. Department of Physiology; Radboud University Medical Center; Nijmegen The Netherlands