1. Department of Cerebrovascular Disease, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, P.R. China
2. Clinical Skill Room, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, P.R. China
3. Tuberculosis Ward, Department of Respiratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, P.R. China
4. Department of Neurology, People's Hospital of Xixiu District, Anshun, Anshun 561000, P.R. China