1. Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University;
2. China National Clinical Research Center for Neurological Diseases;
3. Center of Stroke, Beijing Institute for Brain Disorders;
4. Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease;
5. Department of Neurosurgery, The First Affiliated Hospital of Fujian Medical University, Fujian, People's Republic of China
6. Medical Imaging Center, The 306th Hospital of PLA, Beijing; and