1. Department of Infectious Diseases Karolinska University Hospital Huddinge Stockholm Sweden
2. Laboratory Medicine, Karolinska Institutet Stockholm Sweden
3. Department of Hematology Karolinska University Hospital Huddinge Stockholm Sweden
4. Department of Clinical Immunology Transfusion Medicine, Karolinska University Hospital Huddinge Stockholm Sweden
5. Center for Hematology and Regenerative Medicine (HERM), Department of Medicine Huddinge Karolinska Institutet Stockholm Sweden
6. Center for Infectious Medicine, Department of Medicine Huddinge Karolinska Institutet Stockholm Sweden
7. Childhood Cancer Research Unit, Department of Women's and Children's Health Karolinska Institutet Stockholm Sweden
8. German Red Cross Blood Service Rhineland‐Palatinate and Saarland Bad Kreuznach Germany
9. German Red Cross Blood Service West Hagen Germany