1. Department of Pathology and Molecular Pathology, Helios University Hospital Wuppertal, 42283 Wuppertal, Germany
2. Department of Medicine, Faculty of Health, Witten/Herdecke University, 58448 Witten, Germany
3. Department of Urology, Helios University Hospital Wuppertal, 42283 Wuppertal, Germany
4. Clinic for Otolaryngology, HELIOS-Hospital, 47805 Krefeld, Germany
5. Centre for Clinical Trials, Witten/Herdecke University, 58448 Witten, Germany
6. Department of Nuclear Medicine, Helios University Hospital Wuppertal, 42283 Wuppertal, Germany
7. Department of Urology, Pediatric Urology and Urologic Oncology, Evangelische Kliniken Essen-Mitte, 45136 Essen, Germany