1. Institute of Pathology, University Hospital Bonn, Bonn, Germany
2. Clinic of Urology, Charité-Universitätsmedizin Berlin, Berlin, Germany
3. Berlin Institute for Urologic Research, Robert-Koch Platz 7, Berlin, Germany
4. Clinic of Urology, University Hospital Bonn, Bonn, Germany
5. Proteome Center Rostock, University of Rostock, Rostock, Germany