1. Department of Dermatology; Catholic University of the Sacred Heart; Rome Italy
2. Gastroenterology Division; “Policlinico A. Gemelli” Hospital; Catholic University of the Sacred Heart; Rome Italy
3. Institute of Pathology; Catholic University of the Sacred Heart; Rome Italy
4. Department of Surgical and Biomedical Sciences; Dermatologic Clinic of Terni; University of Perugia; Perugia Italy
5. Department of Surgery and Translational Medicine; Section of Dermatology; University of Florence; Florence Italy