1. Urologic Section, Department of Human and Paediatric Pathology ‘Gaetano Barresi’, University of Messina, Messina, Italy
2. Urology Unit, ‘Santa Maria Regina degli Angeli’ Hospital, Adria, Italy
3. Urology Unit, Academic Medical Centre Hospital ‘Santa Maria della Misericordia’, Udine, Italy
4. Urologic Section, Department of Translational Research and New Technologies, University of Pisa, Pisa, Italy
5. Department of Urology, Sant’Andrea Hospital, ‘La Sapienza’ University of Rome, Rome, Italy