1. Department of Clinical Dermatology; San Gallicano Dermatological Institute-IRCCS; Rome Italy
2. Dermatology Unit; Arcispedale ASMN; Reggio Emilia Italy
3. Dermatology Department; University of Modena and Reggio Emilia; Modena Italy
4. Biostatistical Unit; Scientific Direction; San Gallicano Dermatological Institute-IRCCS; Rome Italy
5. Dermatology Unit; Second University of Naples; Naples Italy