1. Department of Medicine II Division of Gastroenterology Rostock University Medical Center Rostock Germany
2. Lübeck Institute of Experimental Dermatology and Center for Research on Inflammation of the Skin University of Lübeck Lübeck Germany
3. Institute of Pathology Rostock University Medical Center Rostock Germany
4. Department of Dermatology and Center for Research on Inflammation of the Skin University of Lübeck Lübeck Germany