1. Blood Centres at the University Hospitals in Uppsala, Sweden
2. Blood Centres at the University Hospitals in Uppsala, Aarhus, Denmark
3. Blood Centres at the University Hospitals in Uppsala, Lund, Sweden
4. Transplantation Laboratory at the, Serafimer Hospital, Stockholm, Sweden
5. Blood Centres at the University Hospitals in Uppsala, Gothenburg, Sweden
6. Blood Centres at the University Hospitals in Uppsala, Copenhagen, Denmark
7. Tissue Typing Laboratory at the, Finnish Red Cross Blood Transfusion Service, Helsinki, Finland
8. Blood Centres at the University Hospitals in Uppsala, Oslo, Norway