1. Department of Medicine; Section of Dermatology and Venereology; University of Verona; Verona Italy
2. I.R.C.C.S Istituto Ortopedico Galeazzi; Division of Dermatology and Venereology; University of Milan; Milan Italy
3. Department of Dermatology; University of Naples Federico II; Naples Italy
4. Department of Head and Neck Surgery; Section of Dermatology; Azienda Ospedaliero Universitaria Policlinico di Modena; Modena Italy
5. Department of Biomedical Science and Human Oncology; Second Dermatologic Clinic; University of Turin; Turin Italy
6. Dermatology Department; Catholic University of the Sacred Heart; Rome Italy
7. Department of Biomedical Science and Human Oncology; Section of Dermatology; University of Bari; Bari Italy
8. Department of Medicine; Section of Rheumatology; University of Verona; Verona Italy
9. Dipartimento di Medicina e Scienze della Salute “Vincenzo Tiberio”; Università degli Studi del Molise; Campobasso Italy
10. Unit of Dermatology; Azienda Ospedaliera Papardo; Messina Italy
11. Department of Rheumatology; ASST Gaetano Pini-CTO; Milano Italy
12. Division of Rheumatology; Azienda Ospedaliera San Carlo; Potenza Italy
13. Section of Dermatology; University of Genoa; Genoa Italy
14. Department of Medicine; Section of Dermatology; University of Padua; Padua Italy
15. Division of Rheumatology; Azienda USL-IRCCS di Reggio Emilia; University of Modena and Reggio Emilia; Modena Reggio Emilia Italy
16. Department of Medicine; Section of Rheumatology; University of Naples Federico II; Naples Italy