1. Dermatology and Skin Cancer Unit; Arcispedale S.Maria Nuova; IRCCS; Reggio Emilia Italy
2. Department of Clinical and Diagnostic Medicine and Public Health; University of Modena and Reggio Emilia; Modena Italy
3. Department of Internal Medicine and Medical Specialties; University of Genoa; Laboratory of Genetics of Rare Hereditary Cancers; Genoa Italy
4. Department of Dermatology; Medical University of Graz; Graz Austria
5. Pathology Unit; Arcispedale S.Maria Nuova; IRCCS; Reggio Emilia Italy
6. Department of Dermatology; University of Rome Tor Vergata; Rome Italy
7. Department of Dermatology; University of Modena and Reggio Emilia; Modena Italy