1. College of Pharmacy, Changchun University of Chinese Medicine, Changchun, P. R. China
2. School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu, P. R. China
3. College of Pharmacy, Dali University, Dali, P. R. China
4. Shanghai Research Center for Modernization of Traditional Chinese Medicine, National Engineering Laboratory for TCM Standardization Technology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P. R. China
5. University of Chinese Academy of Sciences, Beijing, P. R. China