1. Department of Neurology, Xuanwu Hospital, Beijing Institute for Brain Disorders Capital Medical University Beijing China
2. Beijing Key Laboratory of Hypoxic Conditioning Translational Medicine, Xuanwu Hospital Capital Medical University Beijing China
3. Department of Vascular Ultrasound, Xuanwu Hospital Capital Medical University Beijing China
4. Department of Neurosurgery, Xuanwu Hospital Capital Medical University Beijing China