1. Laboratory of Respiratory Diseases, The Affiliated Hospital of Guilin Medical University, Guilin 541001, P. R. China
2. Key Laboratory of Basic Research on Respiratory Diseases, Guangxi Health Commission, Guilin 541001, P. R. China
3. Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair, Guilin Medical University, Guilin 541001, P. R. China
4. Department of Scientific Research, The Affiliated Hospital of Guilin Medical University, Guilin 541001, P. R. China
5. School of Chemistry and Pharmaceutical Sciences, State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, P. R. China