1. School of Resources and Environment, Hunan University of Technology and Business, Changsha 410205, Hunan, P. R. China
2. Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy & Pharmacology, Hengyang Medical School, University of South China, Hengyang 421001, Hunan, P. R. China
3. Department of Clinical Laboratory, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, Hunan, P. R. China
4. Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, P. R. China