1. Department of Clinical Immunology and Transfusion Medicine, University and Regional Laboratories Region Skåne, Lund, Sweden;
2. Department of Laboratory Medicine, Diagnostic Clinic, University Hospital of North Norway, Tromsø, Norway;
3. Department of Immunology and Transfusion Medicine, Oslo University Hospital, Oslo, Norway;
4. Institute of Clinical Medicine, University of Oslo, Oslo, Norway;
5. Department of Laboratory Medicine, Drammen Hospital, Drammen, Norway;
6. Department of Medical Genetics, University of Oslo and Oslo University Hospital, Oslo, Norway; and
7. Finnmark Hospital Trust, Hammerfest, Norway