1. Institute of Traditional Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
2. Department of Urology, Taipei City Hospital Ren-Ai Branch, Taipei 106, Taiwan
3. Division of Gastrointestinal Surgery, Department of Surgery, Ren-Ai Branch, Taipei City Hospital, Taipei 106, Taiwan
4. General Education Center, University of Taipei, Taipei 100, Taiwan
5. Department of Chemistry, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
6. School of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan