1. European Federation of Psoriasis Patient Associations (EUROPSO) Glavni trg 10 3313 Polzela Slovenia
2. International Federation of Psoriasis Associations (IFPA) Slottsbacken 8 111 30 Stockholm Sweden
3. Department of Biomedical, Surgical and Dental Sciences University of Milan Milan Italy
4. Clinical Dermatology IRCCS Istituto Ortopedico Galeazzi Milan Italy
5. Department of Pharmaceutical and Pharmacological Sciences University of Padua Padua Italy
6. Department of Dermatology San Bortolo Hospital, AULSS8 Vicenza Italy
7. Study Center of the Italian Group for Epidemiologic Research in Dermatology (GISED) Bergamo Italy