1. Department of Physiology, School of Medicine, University of South China, Hengyang 421001, China
2. Department of Medicine, Changde Vocational Technical College, Changde 415000, China
3. Department of Social Medicine and Health Service Management, School of Public Health, University of South China, Hengyang 421001, China
4. Division of Stem Cell Regulation and Application, Key Laboratory for Quality Evaluation of Bulk Herbs of Hunan Province, Hunan University of Chinese Medicine, Changsha 410000, China