1. Division of Urology; Department of Oncology; School of Medicine; San Luigi Hospital; University of Turin; Orbassano (Turin) Italy
2. Department of Public Health and Paediatric Sciences; School of Medicine; University of Turin; Orbassano (Turin) Italy
3. Division of Urology; VCU Health; Richmond VA USA
4. Urological Section; Department of Human and Paediatric Pathology; University of Messina; Messina Italy