1. Dermatology Unit; Department of Medical, Surgical and NeuroSciences; University of Siena; Siena Italy
2. Department of Medical Biotechnologies; University of Siena; Siena Italy
3. Dermatology Unit; University of Campania; Naples Italy
4. Skin Cancer Unit Arcispedale S. Maria Nuova-IRCCS; Reggio Emilia Italy
5. Department of Dermatology; University of Modena and Reggio Emilia; Modena Italy
6. Melanoma Unit; Department of Dermatology; University of Barcelona; Barcelona Spain
7. Dermatology Unit; University Hospital of St-Etienne; Saint Etienne France