1. Department of Surgery, Hospital “P. Colombo”, Velletri, Italy.
2. Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Polo Pontino, Terracina, Latina, Italy.
3. Department of Radiological, Oncological and Anatomo-Pathological Sciences, Sapienza University of Rome, Rome, Italy.
4. Department of Surgery, “Pietro Valdoni”, Sapienza University of Rome, Rome, Italy.