1. Department of Pharmaceutics, School of Pharmacy, Ningxia Medical University, Yinchuan, PR China
2. Key Laboratory of Ningxia Ethnomedicine Modernization, Minidtry of Education, Ningxia Medical University, Yinchuan, PR China
3. Preparation center, General hospital, Ningxia Medical University, Yinchuan, PR China
4. Department of Pharmacology, School of Pharmacy, Ningxia Medical University, Yinchuan, PR China