1. Department of Dermatology and Venereology; University Medical Center Halle (Saale); Martin Luther University Halle-Wittenberg; Halle (Saale) Germany
2. Department of Dermatology; University Medical Center; Johannes Gutenberg University Mainz; Mainz Germany
3. Institute for Health Services Research in Dermatology and Nursing (IVDP); University Medical Center Hamburg-Eppendorf; Hamburg Germany
4. Division of Evidence-based Medicine (dEBM); Department of Dermatology; Allergology and Venereology; Charité - Universitätsmedizin Berlin; Berlin Germany
5. Löwen Pharmacy; Markt 2; 06618 Naumburg; Germany
6. Pharmacy Eschborn, Carl-Mannich-Straße 26, 65760 Eschborn; Germany
7. Office-based Dermatology Practice; Mönchengladbach Gemany
8. Department of Dermatology; University Hospital Erlangen, Erlangen, Germany, Paul-Ehrlich-Institut; Langen Germany