1. Department of Urology, SLK-Kliniken Heilbronn, University of Heidelberg, Heilbronn, Germany.
2. German Cancer Research Center, Heidelberg, Germany.
3. Department of General, Abdominal and Transplant Surgery, University of Heidelberg, Heidelberg, Germany.
4. Department of Urology, Meram Medical Faculty, University of Selcuk, Konya, Turkey.