1. Institute of Human Anatomy University of Padova, Padova, Italy.
2. Urologic Section, Department of Human and Pediatric Pathology “G. Barresi,” University of Messina, Messina, Italy.
3. Department of Urology, Academic Medical Centre Hospital Santa Maria della Misericordia–Udine, Udine, Italy.
4. Urologic Unit, Department of Oncologic, Surgical and Gastrointestinal Sciences, University of Padova, Padova, Italy.