1. School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, P. R. China
2. State Key Laboratory of Respiratory Disease, Department of Clinical Laboratory, Guangzhou Chest Hospital, Guangzhou, Guangzhou 510095, P. R. China
3. Guangdong Second Provincial General Hospital, Guangzhou, Guangzhou 510317, P. R. China