1 Department of Neurology, The First Affiliated Hospital of Zhengzhou University, 1 Jianshe East Road, Erqi District, Zhengzhou, 450000, Henan, China.
2 Department of Neurology, The First Affiliated Hospital of Zhengzhou University, 1 Jianshe East Road, Erqi District, Zhengzhou, 450000, Henan, China. xuyuming@zzu.edu.cn.