1. Chongqing Medical and Pharmaceutical College, Chongqing 400030, China
2. College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
3. Chongqing Key Laboratory of High Active Traditional Chinese Drug Delivery System, Chongqing 400030, China
4. Chongqing Three Gorges Medical College, Chongqing 404120, China