1. Department of Dermatology; University of Cologne; Cologne Germany
2. Miltenyi Biotec GmbH; Bergisch Gladbach Germany
3. Institute for Medical Microbiology, Immunology and Hygiene; University of Cologne; Cologne Germany
4. Center for Molecular Medicine (CMMC); University of Cologne; Cologne Germany
5. Psoriasis Center; Department of Dermatology; University Medical Center Schleswig-Holstein; Campus Kiel; Kiel Germany