1. Department of Neurology, Hunan Aerospace Hospital, Changsha 410205, Hunan, P.R. China
2. Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, P.R. China
3. National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, Hunan, P.R. China
4. Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, P.R. China
5. Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, P.R. China
6. MRC Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Little France, Edinburgh, EH16 4UU, UK
7. Department of Oncology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, P.R. China
8. Department of Neurosurgery, Affiliated Nanhua Hospital, Hengyang Medical College, University of South China, Hengyang 421001, Hunan, P.R. China
9. Hunan Clinical Research Center for Cerebrovascular Disease, Changsha 410008, Hunan Province, P.R. China