1. Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy; Jinan University; Guangzhou 510632 People's Republic of China
2. Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research; Jinan University; Guangzhou 510632 People's Republic of China
3. School of Traditional Materia Medica; Shenyang Pharmaceutical University; Shenyang 110016 People's Republic of China