1. Dermatology Unit IRCCS Humanitas Research Hospital Rozzano (MI) Italy
2. Department of Biomedical Sciences Humanitas University Pieve Emanuele Italy
3. Dermatology Unit Azienda Ospedaliera di Cosenza Cosenza Italy
4. Department of Dermatology 'Luigi Vanvitelli' University School of Medicine Naples Italy
5. Dermatology Unit, Department of Specialistic, Diagnostic and Experimental Medicine S. Orsola‐Malpighi Hospital, University of Bologna Bologna Italy
6. Section of Dermatology, Department of Health Sciences (DISSAL) IRCCS San Martino University Hospital Genoa Italy
7. Fondazione Cà Granda IRCCS Maggiore Policlinico Hospital Milan Italy
8. Clinical Dermatology I.R.C.C.S. Istituto Ortopedico Galeazzi Milan Italy
9. Department of Biomedical Science and Human Oncology, Second Dermatologic Clinic University of Turin Turin Italy
10. Dermatology Unit, Department of Clinical and Experimental Medicine Ospedale Santa Chiara Pisa Italy
11. Department of Medicine, Section of Dermatology and Venereology University of Verona Verona Italy
12. Department of Biomedical and Dental Sciences and Morphofunctional Imaging University of Messina Messina Italy
13. Department of Dermatology University of Bari Bari Italy
14. Istituto Dermopatico Dell'Immacolata, (IDI) IRCCS Rome Italy
15. U.O.S.D. dermatologica ‐ centro per la cura della psoriasi, Ospedale Perrino Brindisi Italy
16. Department of Dermatology, Dermatology Unit Azienda Ospedaliera San Donato Milanese Milan Italy