1. State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, P.R. China
2. Institute of Tropical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
3. School of Pharmaceutical Science and Biomedical Engineering Research Center, Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
4. Institute of Chinese Integrative Medicine, Guangzhou Medical University, Guangzhou, Guangdong 511436, P.R. China