1. Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy Xuzhou Medical University Xuzhou 221004 P. R. China
2. Department of Pharmaceutical Analysis School of Pharmacy Xuzhou Medical University Xuzhou 221004 P. R. China
3. Beijing WeijianJiye Institute of Biotechnology Beijing 100039 P. R. China
4. State Key Laboratory of Quality Research in Chinese Medicines Macau University of Science and Technology Macau 999078 P. R. China