1. Department of Urology; Careggi Hospital; University of Florence; Florence Italy
2. Urology Section, Department of Surgery; University of Catania; Catania Italy
3. Department of Urology; Icahn School of Medicine at Mount Sinai; New York City New York USA
4. Division of Urology; Southern Illinois University School of Medicine; Springfield Illinois USA
5. Department of Urology; Hospital La Zarzuela; Madrid Spain
6. Department of Urology; University Hospital of Larissa; Larissa Greece
7. Department of Urology; Sheffield Teaching Hospitals NHS Trust; Sheffield UK