1. Neurosurgery Center, Department of Neurotrauma and Neurocritical Care Medicine, The National Key Clinical Specialty, The Engineering Technology Research Center of Education, Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China