1. Department of Neurology, People Hospital of Gansu Province, Lanzhou, P.R. China
2. School of Basic Medical Sciences, Institute of Anatomy and Histology & Embryology, Neuroscience, Lanzhou University, Lanzhou, P.R. China
3. School of Basic Medical Sciences, Institute of Biochemistry and Molecular Biology, Lanzhou University, Lanzhou, P.R. China
4. Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, P.R. China