1. Department of Dermatology and Phlebology Vivantes Klinikum im Friedrichshain Berlin Germany
2. Mannheim Institute of Public Health Social and Preventive Medicine Medical Faculty Mannheim Heidelberg University Mannheim Germany
3. Department of Dermatology Venereology and Allergology University Medical Center Mannheim Heidelberg University Mannheim Germany
4. Department of Dermatology Venereology und Allergology Charité University Medicine Berlin Berlin Germany
5. Department of Dermatology and Venereology Vivantes Klinikum Neukölln Berlin Germany
6. Department of Dermatology and Allergology Vivantes Klinikum Spandau Berlin Germany
7. Skin Cancer Unit German Cancer Research Center (DKFZ) Heidelberg Germany