Marschall-Kehrel A1, Mürtz G2, Kramer G3, Jünemann K4 1. Urology Consultant, Oberursel, Germany, 2. Apogepha Arzneimittel GmbH, Dresden, Germany, 3. Berufsgenossenschaftliche Unfallklinik, Murnau, Germany, 4. Department of Urology and Pediatric Urology, University of Kiel, Germany