1. Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education, Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
2. Department of Pharmacology, Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
3. College of Basic Medicine, Yinchuan, Ningxia 750004, P.R. China
4. Ningxia Hui Modern Medicine Engineering Research Center, Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China