1. Department of Pharmacology, School of Pharmacy, Hunan University of Chinese Medicine, Changsha, P.R. China
2. Division of Stem Cell Regulation and Application, Hunan University of Chinese Medicine, Changsha, P.R. China
3. The First Affiliated Hospital, Hunan University of Chinese Medicine, Changsha, P.R. China
4. Department of Respiratory Diseases, Medical School, Hunan University of Chinese Medicine, Changsha, P.R. China