1. School of Pharmaceutical Sciences and Yunnan Provincial Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Chenggong, Kunming, Yunnan, P. R. China
2. Division of Metabolic Engineering, Institute of Natural Medicine, University of Toyama, Sugitani, Toyama, Japan
3. College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, P. R. China