1. School of Pharmacy Henan University of Chinese Medicine Henan Province Zhengzhou 450046 P. R. China
2. Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment & Chinese Medicine Development of Henan Province Henan University of Chinese Medicine Henan Province Zhengzhou 450046 P. R. China
3. Zhengzhou Key Laboratory of Chinese Medicine Quality Control and Evaluation Henan University of Chinese Medicine Henan Province Zhengzhou 450046 P. R. China
4. College of Chemistry Zhengzhou University Henan Province Zhengzhou 450001 P. R. China