1. State Key Laboratory of Functions and Applications of Medicinal Plants, Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University, Guiyang 550004, P. R. China
2. School of Pharmacy, Guizhou Medical University, Guian New District, , Guizhou 550025, P. R. China
3. Center for Tissue Engineering and Stem Cell Research, Key Laboratory of Regenerative Medicine of Guizhou Province, Guizhou Medical University, Guiyang 550004, P. R. China