1. State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, Guizhou 550004, P. R. China
2. School of Pharmacy, Guizhou Medical University, Guiyang, Guizhou 550004, P. R. China
3. Department of Pain, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, China
4. School of Anesthesiology, Guizhou Medical University, Guiyang, Guizhou 550004, China
5. School of Basic Medicine, Guizhou Medical University, Guiyang, Guizhou 550004, China
6. Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, P. R. China