1. Department of Medicine II, Division of Gastroenterology, Rostock University Medical Center, Rostock, Germany
2. Institute of Immunology and Core Facility for Cell Sorting & Cell Analysis, Rostock University Medical Center, Rostock, Germany
3. Institute of Pathology, Rostock University Medical Center, Rostock, Germany
4. Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany