1. Beijing Institute of Pharmacology and Toxicology, 27 Tai-Ping Road, Beijing 100850, China
2. Natural
Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
3. Beijing Institute of Radiation Medicine, 27 Tai-Ping Road, Beijing 100850, China
4. Screening
Technologies Branch, Developmental Therapeutics Program, Division
of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick National Laboratory for Cancer Research, National Institutes of Health, Frederick, Maryland 21702, United States
5. Chinese
Medicine Research and Development Center, China Medical University and Hospital, Taichung 40402, Taiwan