1. Medical Sciences Department; Section of Dermatology; University of Turin; Turin Italy
2. Department off Twin research and Genetic Epidemiology; King's College London; London UK
3. Skin Cancer Unit; Arcispedale ASMN-IRCCS; Reggio Emilia Italy
4. Pathology Unit; Gaetano Rummo Hospital; Benevento Italy
5. Pathology Unit; Arcispedale ASMN-IRCCS; Reggio Emilia Italy
6. Dermatology Unit; Second University of Naples; Naples Italy