1. Dermatology Centre; Salford Royal Hospital; University of Manchester; Manchester Academic Health Science Centre; Manchester U.K.
2. Comprehensive Center for Inflammation Medicine; University Hospital Schleswig-Holstein; Campus Lübeck Lübeck Germany
3. Psoriasis-Center at the Department of Dermatology; Universitaetsklinikum; Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, Haus 19 24105 Kiel Germany
4. Department of Dermatology; Charles University Third Medical Faculty and Faculty Hospital Kralovske Vinohrady; Srobarova 50 Prague 10 10034 Czech Republic
5. Grazyna Pulka Specjalistyczny Osrodek ‘ALL-MED’ ul. Sw. Marka 31/IU; ul. Sw. Krzyza 16/14 Krakow 31-023 Poland
6. Dermatology Clinic; Tartu University Hospital; Raja 31 Tartu 50417 Estonia
7. Department of Dermatology; Wojewodzki Szpital Specjalistyczny we Wroclawiu; ul. Kamienskiego 73a Wroclaw 51-124 Poland
8. Global Clinical Development, Biopharmaceuticals; Hexal AG; Industriestraße 25 D 83607 Holzkirchen Germany