1. Beijing Institute of Pharmacology and Toxicology, 27 Tai-Ping Road, Beijing, 100850, China
2. Surgical Oncology Research Facility, Duke University Medical Center, Box 2926, Durham, North Carolina 27710, United States
3. Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599-7568, United States
4. Chinese Medicine Research and Development Center, China Medical University and Hospital, Taichung, Taiwan