1. Cleveland Clinic; Glickman Urological and Kidney Institute; Cleveland OH USA
2. The Johns Hopkins Medical Institutions; James Buchanan Brady Urological Institute; Baltimore MD USA
3. Dept. of Urology; Washington University School of Medicine; St. Louis MO USA
4. Dept. of Urology; New York University School of Medicine; New York NY USA
5. Henry Ford Health System; Vattikuti Urology Institute; Detroit MI USA