1. DRK Blutspendedienst Baden-Württemberg-Hessen gGmbH, Institute of Transfusion Medicine and Immunohematology; Goethe University Frankfurt am Main, and
2. Institute for Medical Microbiology and Infection Control; Hospital of Goethe-University; Frankfurt am Main Germany
3. National Bacteriology Laboratory; NHS Blood and Transplant; Colindale London UK