1. Pathology, Johns Hopkins School of Medicine, Baltimore, MD, USA
2. Oncology, Johns Hopkins School of Medicine, Baltimore, MD, USA
3. Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
4. Martini-Klinik Prostate Cancer Center, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
5. Department of Urology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany