1. Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan
2. Department of Agricultural Chemistry, National Taiwan University, Taipei, Taiwan
3. Department of Microbiology & Immunology, Dalhousie University, Halifax, Nova Scotia, Canada
4. Department of Cosmetic Science, Chia Nan University of Pharmacy and Science, Tainan, Taiwan
5. School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan