1. College of Traditional Chinese Medicine, Shenyang Pharmaceutical University, Shenyang, Liaoning, P. R. China
2. Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
3. Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, Shanxi, P. R. China
4. School of Pharmacy, Hebei Medical University, Shijiazhuang, Hebei, P. R. China
5. Department of Toxicology, School of Public Health, Tianjin Medical University, Tianjin, China
6. State Key Laboratory of Natural and Biomimetic Drugs and Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University, Beijing, P. R. China
7. State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P. R. China