Department of Urology, University of Florence, Careggi Hospital, Largo Brambilla 3, Urologic Clinic San Luca, Florence, 50100, Italy. maurogacci@yahoo.it. Department of Urology, University of Florence, Careggi Hospital, Largo Brambilla 3, Urologic Clinic San Luca, Florence, 50100, Italy. os11nov@hotmail.com. Department of Urology, University of Florence, Careggi Hospital, Largo Brambilla 3, Urologic Clinic San Luca, Florence, 50100, Italy. cgiannessi@yahoo.it. Department of Radiation Therapy, University of Florence, Careggi Hospital, Largo Brambilla 3, Florence, Italy. beatrice.detti@aouc.unifi.it. Department of Radiation Therapy, University of Florence, Careggi Hospital, Largo Brambilla 3, Florence, Italy. Lorenzo.livi@unifi.it. Department of Radiation Therapy, University of Florence, Careggi Hospital, Largo Brambilla 3, Florence, Italy. flowerle@tiscali.it. Department of Radiation Therapy, University of Florence, Careggi Hospital, Largo Brambilla 3, Florence, Italy. tatim@tiscali.it. Department of Urology, Tor Vergata University, Via di Tor Vergata, Rome, Italy. efinazzi@tin.it. Department of Urology, University of Florence, Careggi Hospital, Largo Brambilla 3, Urologic Clinic San Luca, Florence, 50100, Italy. vlimarzi@hotmail.com. Department of Urology, University of Florence, Careggi Hospital, Largo Brambilla 3, Urologic Clinic San Luca, Florence, 50100, Italy. andreamine@libero.it. Department of Urology, University of Florence, Careggi Hospital, Largo Brambilla 3, Urologic Clinic San Luca, Florence, 50100, Italy. carini@unifi.it. Department of Urology, University Hospital of Larissa, Larissa, Greece. sgravas2002@yahoo.com. Department of Urology, Hannover Medical School, Hannover, Germany. Oelke.Matthias@mh-hannover.de. Department of Urology, University of Florence, Careggi Hospital, Largo Brambilla 3, Urologic Clinic San Luca, Florence, 50100, Italy. sergio.serni@unifi.it.