1. Department of Urology, Ev.-Luth. Diakonissen Hospital Flensburg, 24939 Flensburg, Germany
2. Department of Urology, Klinikum Osnabrück, 49076 Osnabrück, Germany
3. Department of Pathology, Ev.-Luth. Diakonissen Hospital Flensburg, 24939 Flensburg, Germany