1. Department of Microbiology and Immunology; University of California; San Francisco CA USA
2. Division of Molecular Immunology; Department of Internal Medicine III; Nikolaus-Fiebiger-Center; University of Erlangen-Nürnberg; Erlangen Germany
3. Institut für Immunologie; Philipps-Universität Marburg; Marburg Germany
4. Department of Medicine; Hadassah University Hospital and The Hebrew University Faculty of Medicine; Jerusalem Israel