1. Division of Urology, Department of Surgery, Taipei City Hospital Zhongxiao Branch, Taipei 115, Taiwan
2. Department of Applied Chemistry, National University of Kaohsiung, Kaohsiung 811, Taiwan
3. Department of Applied Chemistry, National Pingtung University, Pingtung 900, Taiwan
4. Division of Urology, Department of Surgery, Taipei City Hospital Heping Fuyou Branch, Taipei 100, Taiwan
5. Department of Exercise and Health Sciences, University of Taipei, Taipei 100, Taiwan
6. Department of Urology, School of Medicine, National Yang-Ming University, Taipei 112, Taiwan