1. Institut für Immunologie und Transfusionsmedizin; Universitätsmedizin Greifswald; Greifswald Germany
2. Transfusion Medicine; Medical Faculty of Tübingen; Tübingen Germany
3. Institute for Transfusion Medicine Dessau; Red Cross Blood Transfusion Service NSTOB; Dessau Germany
4. Institut für Transfusionsmedizin; Universitätsmedizin Rostock; Rostock Germany
5. Department of Medicine; Michael G. DeGroote School of Medicine; McMaster University; Hamilton ON Canada
6. Department of Laboratory Medicine; Tan Tock Seng Hospital; Singapore Singapore
7. Institute for Clinical Immunology and Transfusion Medicine; Justus Liebig University; Giessen Germany
8. Department of Pathology and Molecular Medicine; McMaster University; Hamilton ON Canada