1. Gerhard Domagk Institute of Pathology, University of Münster, Münster, Germany
2. Institute of Pathology, Military Hospital Ulm, Ulm, Germany
3. Institute of Pathology, Neuss, Germany
4. Department of Urology, University Hospital Münster, University of Münster, Münster, Germany
5. Department of Nuclear Medicine, University Hospital Münster, Münster, Germany