1. Department of Neurology Intensive Care Unit, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China
2. Department of Neurology, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi 541004, China
3. Department of Neurology and Stroke Center, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China
4. Department of Neurology, Xiangya Hospital of Central South University, Changsha, Hunan 410008, China
5. Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China