1. Department of Geriatric Urology, Xiangya International Medical Center, Xiangya Hospital, Central South University, Changsha, People's Republic of China.
2. National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, People's Republic of China.
3. Martini-Klinik Prostate Cancer Center, University Hospital Hamburg-Eppendorf, Hamburg, Germany.
4. Department of Pathology, Xiangya Hospital, Central South University, Changsha, People's Republic of China.
5. Department of Urology, Hunan Provincial Hospital of Traditional Chinese Medicine, Zhuzhou, People's Republic of China.
6. Department of Urology, Zhuzhou 331 Hospital, Zhuzhou, People's Republic of China.
7. Medizinische Klinik and Poliklinik IV, Klinikum der Universität München, Munich, Germany.