1. School of Pharmacy
2. North China University of Science and Technology
3. Tangshan 063210
4. People's Republic of China
5. State Key Laboratory of Bioactive Substance and Function of Natural Medicines
6. Institute of Materia Medica
7. Chinese Academy of Medical Sciences and Peking Union Medical College
8. Beijing 100050
9. Department of Pharmacy
10. Affiliated Drum Tower Hospital of Nanjing University Medical School
11. Nanjing 210008
12. Nanjing Medical University
13. Nanjing 211166