Yu-Hwei Tseng1, Fang-Rong Chang2. 1. National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei, Taiwan. 2. National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei, Taiwan; Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan. Electronic address: aaronfrc@nricm.edu.tw.