1. Glickman Urological and Kidney Institute; Cleveland Clinic; Cleveland; OH; USA
2. Division of Urologic Surgery; University of Tennessee; Knoxville; TN
3. Department of Urology; Mayo Clinic; Rochester; MN; USA
4. Urology Unit; Second University of Naples; Naples; Italy
5. Life and Health Sciences Research Institute; University of Minho; Braga; Portugal