1. Psoriasispatiënten Nederland Nijkerk The Netherlands
2. Ghent University Hospital Ghent Belgium
3. Department of Dermatology Copenhagen University Hospital − Bispebjerg and Frederiksberg Copenhagen Denmark
4. Department of Clinical Medicine University of Copenhagen Denmark
5. Lausanne University Hospital CHUV Lausanne Switzerland
6. Fondazione Natalino Corazza Onlus Psoriasis & Co Bologna Italy
7. Associaţia Pacienţilor cu Afecţiuni Autoimune Bucharest Romania
8. Deutscher Psoriasis Bund e.V. Hamburg Germany
9. Paul Sabatier University Toulouse France
10. Centre Hospitalier Universitaire Toulouse France
11. University of Hertfordshire Hatfield UK
12. Ninewells Hospital Dundee Scotland UK
13. Barts Health NHS Trust & Queen Mary University London UK