1. Department of Dermatology; University Medical Center Freiburg; Hauptstrasse 7 D-79104 Freiburg Germany
2. Bernhard Nocht Institute for Tropical Medicine (BNITM); Bernhard-Nocht-Straße 74 D-20359 Hamburg Germany
3. Institute of Medical Microbiology and Hygiene; University Medical Center Freiburg; Hermann-Herder-Str. 11 D-79104 Freiburg Germany