1. Department of Urology, Hospital Universitario HM Sanchinarro, 28050 Madrid, Spain
2. ROC Clinic Direction, Martínez Campos 17, 28010 Madrid, Spain
3. Urology Unit, Santa Maria della Misericordia University Hospital, 33100 Udine, Italy
4. Department of Urology, Hospital Universitario HM Montepríncipe, 28660 Madrid, Spain
5. Department of Urology, Hospital Universitario HM Puerta del Sur, 28938 Madrid, Spain
6. Department of Urology, Hospital Universitario HM Rivas, 28521 Madrid, Spain
7. Unit of Urology, Department of Woman, Child and General and Specialized Surgery, University of Campania “Luigi Vanvitelli”, 81100 Naples, Italy