1. School of Pharmaceutical Sciences & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
2. Yunnan Cancer Hospital (Third Affiliated Hospital of Kunming Medical University), Kunming, Yunnan 650118, P.R. China
3. The First Clinical Medical College of Kunming Medical University, Kunming, Yunnan 650500, P.R. China