1. IRL; Biomedical Services; American Red Cross; Philadelphia PA USA
2. Institute for Transfusion Medicine and Immunohematology; Red Cross Transfusion Service of Baden-Wuerttemberg-Hessen gGmbH; Baden-Baden Germany
3. The International Blood Group Reference Laboratory; NHS Blood and Transplant; Filton Bristol UK
4. National Blood Services; Ramat Gan Israel
5. Blood Group Unit; Finnish Red Cross Blood Service; Helsinki Finland
6. New York Blood Center; Laboratory of Immunohematology and Genomics; Long Island City NY USA