1. Department of Urology, Medical University of Vienna, Vienna, Austria
2. Division of Urology, Department of Special Surgery, Jordan University Hospital, The University of Jordan, Amman, Jordan
3. Department of Urology, University of Florence, Careggi Hospital, Florence, Italy
4. Department of Pathology, Medical University of Vienna, Vienna, Austria
5. Institute of Andrology and Urology, Karl Landsteiner University, Krems an der Donau, Austria
6. Department of Urology, University of Texas Southwestern Medical Centre, Dallas, TX, USA
7. Department of Urology, Weill Cornell Medical College, New York, NY, USA