1. Department of Immunology and Transfusion Medicine Haukeland University Hospital Bergen Norway
2. Department of Clinical Science University of Bergen Bergen Norway
3. Norwegian Armed Forces Joint Medical Services Oslo Norway
4. Irish Blood Transfusion Service Dublin Republic of Ireland
5. Scottish National Blood Transfusion Service Edinburgh Scotland
6. Welsh Blood Service Llantrisant UK
7. Etablissement Français du Sang Grand Est Nancy France
8. Sanquin Blood Bank Amsterdam The Netherlands
9. Croix‐Rouge, Service du Sang Namur Belgium
10. The Blood Bank, Landspitali University Hospital Reykjavik Iceland
11. Reykjavik University Reykjavik Iceland
12. NHS Blood and Transplant Cambridge UK
13. Department Blood Cell Research Sanquin Research Amsterdam the Netherlands