1. Department of Neurosurgery, Peking University International Hospital;
2. Departments of Neurosurgery and
3. China National Clinical Research Center for Neurological Diseases;
4. Neuroradiology, Beijing Tiantan Hospital, Capital Medical University;
5. Center of Stroke, Beijing Institute for Brain Disorders; and
6. Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, P. R. China