1. Section of Dermatology, Dipartimento Universitario di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, Rome, Italy
2. Dermatology Unit, Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
3. Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
4. Department of Biomedical Science and Human Oncology, Second Dermatologic Clinic, University of Turin, Turin, Italy
5. Department of Dermatology, University of Rome Tor Vergata, Rome, Italy
6. Section of Dermatology, Di.S.Sal. Department of Health Science, San Martino Polyclinic Hospital, University of Genoa, Genoa, Italy
7. Dermatology Unit, Azienda Ospedaliera San Donato Milanese, Milan, Italy
8. Dermatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
9. Section of Hygiene, University Department of Health Sciences and Public Health, Rome, Italy