1. Department of Medical Informatics, Biometry and Epidemiology; University of Erlangen/Nürnberg; Waldstraße 6 91054 Erlangen Germany
2. Department of Dermatology; University Hospitals of Schleswig-Holstein; Campus Kiel Kiel Germany
3. Department of Dermatology; SLK-Kliniken GmbH; Heilbronn Germany
4. Information Network of Departments of Dermatology (IVDK); University Medicine Göttingen; Göttingen Germany