1. School of Public Health, Southern Medical University, Guangzhou 510515, P. R. China
2. School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, P. R. China
3. Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Southern Medical University, Guangzhou 510515, P. R. China
4. Guangdong Provincial Engineering Laboratory of Chinese Medicine Preparation Technology, Guangzhou 510515, P. R. China