1. Department of Dermatology; Faculty of Medicine; University Hospital Complex; Santiago de Compostela Spain
2. Department of Dermatology; University Hospital of Saint Etienne; Saint Etienne France
3. Department of Dermatology; Regional Hospital of Asa Norte; Brasilia Brazil
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. Pathology Unit; Arcispedale S. Maria Nuova; IRCCS; Reggio Emilia Italy