1. Institute of Biomedical Sciences, National Chung-Hsing University, Taichung, Taiwan
2. Division of Urology, Taichung Veterans General Hospital, No. 160, Section 3, Taichung-Gang Road, Taichung 40705, Taiwan
3. Department of Education and Research, Taichung Veterans General Hospital, No. 160, Section 3, Taichung-Gang Road, Taichung 40705, Taiwan