1. Department of Human Anatomy, School of Basic Medical Sciences, Hunan University of Medicine, Huaihua 418000, P.R. China
2. School of Public Health and Laboratory Medicine, Hunan University of Medicine, Huaihua 418000, P.R. China
3. School of Basic Medical Sciences, Shaoyang University, Shaoyang 422000, P.R. China
4. Department of Cell Biology and Genetics, School of Basic Medical Sciences, Hunan University of Medicine, Huaihua 418000, Hunan Province, P.R. China