1. New Drug Screening Center, Pharmaceutical College, Guangdong Pharmaceutical University, Guangzhou, Guangdong 510006, P.R. China
2. Xinhua College of Sun Yat-sen University, Dongguan, Guangdong 523000, P.R. China
3. Guangzhou Nansha Central Hospital, Guangzhou, Guangdong 511400, P.R. China