1. Department of Urology, Medical University of Vienna, Vienna, Austria
2. Department of Special Surgery, Jordan University Hospital, The University of Jordan, Amman, Jordan
3. Karl Landsteiner Institute of Urology and Andrology, Vienna, Austria
4. Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, USA
5. Department of Urology, Weill Cornell Medical College, New York-Presbyterian Hospital, New York, NY, USA