1. Institute for Virology and Immunobiology University of Würzburg Würzburg Germany
2. Institute of Medical Microbiology and Hygiene University of Marburg Marburg Germany
3. Department of Internal Medicine II Hepatology Research Laboratory University Hospital Würzburg Würzburg Germany
4. Department of Dermatology Venereology, and Allergology University Hospital Würzburg Würzburg Germany