1. Department of Biochemistry, Sofia University, “St. Kliment Ohridski”, 8 Dragan Tzankov Strasse, Sofia 1164, Bulgaria, Department of Medical Microbiology and Immunology, Aarhus University, Bartholin Building, Wilhelm Meyers Alle, Building 240, Aarhus 8000, Denmark, Brigham and Women's Hospital, Department of Pathology, Harvard Medical School, Boston, Massachusetts 02115, Medical Research Council Immunochemistry Unit, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU,...