1. Institute of Medicine, Chung Shan Medical University, Taichung 40201, Taiwan
2. Division of Urology, Department of Surgery, Taichung Veterans General Hospital, Taichung 40705, Taiwan
3. Department of Education and Research, Taichung Veterans General Hospital, Taichung 40705, Taiwan
4. Institute of Biomedical Science, National Chung-Hsing University, Taichung 40227, Taiwan
5. Department of Forestry, National Chung-Hsing University, Taichung 40227, Taiwan