1. Department of Emergency, Xuanwu Hospital Capital Medical University Beijing China
2. Department of Neurology and Intracranial Hypertension & Cerebral Venous Disease Center National Health Commission of the People's Republic of China, Xuanwu Hospital, Capital Medical University Beijing China
3. Department of Neurology The People's Hospital of Qingxian Cangzhou China
4. Cerebrovascular Diseases Research Institute and Department of Neurology Xuanwu Hospital, Capital Medical University Beijing China
5. Department of Pathology, Xuanwu Hospital Capital Medical University Beijing China