1. Department of Traditional Chinese Medicine, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, P.R. China
2. Guangdong Provincial Institute of Geriatric, Guangzhou, 510080, P.R. China
3. Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, P.R. China