1. Department of Dermatology, Venereology and Allergology; University of Frankfurt/Main; Germany
2. Dermatologikum Hamburg; Germany
3. Charité University Medicine; Berlin; Germany
4. Dermatology Office; Osnabrück; Germany
5. Department of Dermatology and Allergology; University of Bochum; Germany
6. CVDerm, University Clinic Hamburg-Eppendorf; Germany
7. Biogen Idec GmbH; Ismaning; Germany