1. Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease School of Pharmaceutical Sciences & the Fifth Affiliated Hospital Guangzhou Medical University Guangzhou Guangdong 511436 P.R. China
2. Shenzhen Institute for Drug Control Shenzhen 518057 P.R. China
3. Institute of Pharmaceutical Analysis College of Pharmacy Jinan University Guangzhou Guangdong 510632 P.R. China