1. Department of Dermatology; University of L'Aquila; L'Aquila Italy
2. Dermatological Clinic; IRCCS Galeazzi Hospital; University of Milan; Milan Italy
3. Department of Territorial Social Medicine - Section of Dermatology; University of Messina; Messina Italy
4. Department of Dermatology; Catholic University of the Sacred Heart; Rome Italy
5. Department of Oncologic Dermatology; Santa Maria and San Gallicano Institute of Dermatology - IRCCS; Rome Italy
6. Dermatology Unit; University of Piemonte Orientale; Maggiore della Carità Hospital; Novara Italy
7. Department of Medical and Surgical Specialities and Public Health; Section of Clinical; Allergological and Venereological Dermatology; University of Perugia; Perugia Italy
8. Section of Dermatology; Department of Surgical Sciences; University of Parma; Parma Italy
9. Department of Dermatology; University of Naples “Federico II”; Naples Italy