1. Department of Medical-Surgical Sciences and Biotechnologies, Sapienza University of Rome, 00161 Rome, Italy
2. Department of Maternal Infantile and Urological Sciences, Sapienza University of Rome, 00161 Rome, Italy
3. Vulvar Pathology Study Center, 00161 Roma, Italy
4. Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy
5. Department of Obstetrics and Gynecology, IRCCS Foundation Policlinico San Matteo, 27100 Pavia, Italy