1. Department of Internal Medicine I; University of Lübeck; Lübeck Germany
2. Beiersdorf AG; Hamburg Germany
3. Department of Dermatology; University of Lübeck; Lübeck Germany
4. Section of Plastic Surgery; University of Lübeck; Lübeck Germany
5. Department of Virology and Cell Biology; University of Lübeck; Lübeck Germany
6. LADR Medical laboratory Dr. Kramer & colleagues; Geesthacht Germany