1. Department of Dermatology and Allergy; Charité - Universitätsmedizin Berlin; Berlin Germany
2. Department of Dermatology; University Hospital Mainz; Mainz Germany
3. Department of Dermatology and Allergy; Klinikum Oldenburg AöR; University of Oldenburg; Oldenburg Germany
4. Hautarztpraxis; Dresden Germany
5. Department of Dermatology; University Allergy Center; University Hospital Carl Gustav Carus; Technical University Dresden; Dresden Germany
6. Department of Dermatology and Allergology; Ludwig-Maximilian University; Munich Germany
7. Department of Dermatology and Allergology; Justus Liebig University; University Medical Center Gießen and Marburg; Gießen Germany
8. Department of Dermatology; Medical Center - University of Freiburg; Freiburg Germany
9. Department of Dermatology; University of Tübingen; Tübingen Germany
10. Department of Dermatology; University Hospital Erlangen; Erlangen Germany
11. Department of Dermatology; Clinical Centre Darmstadt; Darmstadt Germany
12. Department of Dermatology, Venereology and Allergology; University Medical Center; Georg-August-University; Göttingen Germany
13. Department of Dermatology; University Hospital of Essen; University of Duisburg-Essen; Essen Germany
14. Praxis für Dermatologie; Memmingen Germany
15. Hautarztpraxis; Heilbad Heiligenstadt Germany
16. Hautarztpraxis; Panketal Germany
17. Novartis Pharma AG; Basel Switzerland
18. Novartis Pharma GmbH; Nürnberg Germany