1. State Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai 201203 P. R. China
2. School of Pharmacy University of Chinese Academy of Sciences Beijing 100049 P. R. China
3. Shanghai Tenth People's Hospital, School of Medicine Tongji University Shanghai 200072 P. R. China
4. School of Chinese Materia Medica Nanjing University of Chinese Medicine Nanjing 210046 P. R. China