1. Department of Urology, The Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, Jiangsu 225003, P.R. China
2. Key Laboratory of Pattern Recognition in Liaoning, School of Medical Devices, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, P.R. China
3. Department of The Second Cadre Ward, General Hospital of Northern Theater Command, National Center for Clinical Research of Geriatric Diseases, Shenyang, Liaoning 157099, P.R. China
4. Department of Urology, General Hospital of Northern Theater Command, Shenyang, Liaoning 110013, P.R. China
5. Department of Oncology, General Hospital of Northern Theater Command, Shenyang, Liaoning 110013, P.R. China