1. Department of Dermatology; University of Modena and Reggio Emilia; Modena Italy
2. Dermatology and Skin Cancer Unit; Arcispedale Santa Maria Nuova IRCCS; Reggio Emilia Italy
3. Skin Cancer Unit; Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS; Meldola Italy
4. Dermatology Unit; Second University of Naples; Naples Italy
5. Department of Medical Sciences; Section of Dermatology; University of Turin; Turin Italy