1. Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center, Medical University of Vienna, 1090 Vienna, Austria.
2. Department of Dermatology, University of Duesseldorf, 40225 Duesseldorf, Germany.
3. Department of Radiation-Oncology, University of Duesseldorf, 40225 Duesseldorf, Germany.
4. Institute of Medical Microbiology, Medical Faculty, University of Duesseldorf, 40225 Duesseldorf, Germany.
5. Department of Dermatology and Allergy, Ludwig-Maximilian University, 80337 Munich, Germany.
6. Institute of Pharmacology and Clinical Pharmacology, Heinrich-Heine-University Düsseldorf, 40225 Duesseldorf, Germany.
7. Department of Dermatology, University Hospital Schleswig-Holstein, 24105 Kiel, Germany.