1. Department of Dermatology, Medical University of Vienna, Vienna, Austria
2. Dermatology Practice, Vienna, Austria
3. Department of Dermatology and Venerology, Klinikum Wels-Grieskirchen, Wels, Austria
4. Department of Dermatology, Kepler University Hospital, Linz, Austria
5. Faculty of Medicine and Dentistry, Danube Private University, Krems an der Donau, Austria
6. Department of Dermatology, Klinik Landstraße, Vienna, Austria
7. Department of Dermatology, Medical University Graz, Graz, Austria
8. Dermatology Practice, Klagenfurt, Austria
9. Amgen GmbH, Vienna, Austria
10. hemetsberger medical services, Vienna, Austria
11. Amgen Inc, Thousand Oaks, CA, USA
12. Department of Dermatology, Municipal Hospital Hietzing, Wolkersbergenstraße 1, A-1130 Vienna, Austria