Michael Rink1, Shahrokh F Shariat2. 1. Department of Urology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany. Electronic address: mrink@uke.de. 2. Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria; Department of Urology, Weill Cornell Medical College, New York, NY, USA; Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, USA.