1 Urology Unit, Academic Medical Centre, Santa Maria della Misericordia Hospital, Udine, Italy.
2 Urologic Section, Gaetano Barresi Department of Human and Paediatric Pathology, University of Messina, Messina, Italy.
3 Urologic Section, Gaetano Barresi Department of Human and Paediatric Pathology, University of Messina, Messina, Italy. Electronic address: vficarra@unime.it.