1. Dermatology and Skin Cancer Unit; Arcispedale Santa Maria Nuova (Istituto di Ricovero e Cura a Carattere Scientifico-IRCCS); Reggio Emilia Italy
2. Departments of Dermatology; University of Modena and Reggio Emilia; Modena Italy
3. Pathology; University of Modena and Reggio Emilia; Modena Italy
4. Clinical and Diagnostic Medicine and Public Health; University of Modena and Reggio Emilia; Modena Italy
5. Department of Dermatology; Medical University of Graz; Graz Austria