Barakat B1,2, Addali M3, Hadaschik B4, Rehme C4, Hijazi S5, Zaqout S1 1Urology Centre, Mönchengladbach, Germany 2Department of Urology and Pediatric Urology, Hospital Viersen, Germany 3Department of Urology, Hospital Siegen, Germany 4Department of Urology, University Hospital Essen, Germany 5Department of Urology, Hospital Ibbenbüren, Germany Correspondence Address Dr. med. Bara Barakat Urology Centre Albertusstraße 17 41061 Möchengladbach Germany Fax.: +49/ 2161 3093077 Tel.: +49/ 21613093078 Bara Barakat Mustapha Addali Boris Hadaschik Christian Rehme Sameh Hijazi Samy Zaqout