1. Department of Clinical Immunology Copenhagen University Hospital Copenhagen Denmark
2. Sanquin Blood Supply Foundation Amsterdam the Netherlands
3. Finnish Red Cross Blood Service Helsinki Finland
4. Scottish National Blood Transfusion Service Edinburgh Scotland
5. National Health Service Blood and Transplant UK
6. CSL Plasma GmbH Marburg Germany
7. Interregional Blood Transfusion Service SRC University of Lausanne Berne Switzerland
8. Centro Nazionale Sangue Istituto Superiore di Sanità Rome Italy
9. Department of Clinical Immunology and Transfusion Medicine Karolinska University Hospital Solna Sweden
10. TRIP Hemovigilance and Biovigilance Office Leiden the Netherlands
11. Institute of Legal Medicine University Medical Center Hamburg Hamburg Germany
12. Banc de Sang I Teixits Barcelona Spain
13. Bioef‐Fundacion Vasca de Innovacion e Investigation Sanitarias‐Osakidetza‐Centro Vasco de Transfusión y Tejidos Humanos Galdakao Spain
14. Sanquin Research Department of Donor Medicine Research ‐ Donor Studies Amsterdam the Netherlands
15. Department of Sociology Vrije Universiteit Amsterdam the Netherlands