1 Department of Neurology, Nanfang Hospital of Southern Medical University, Guangzhou 510515, China; Department of Neurology, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, China.
2 Department of Orthopaedics, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, China.
3 Department of Oncology Unit 2, PLA General Hospital, Beijing 100853, China.
4 Department of Neurosurgery, The 153th Hospital of PLA, Zhengzhou 450042, China.
5 Department of Neurology, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, China.
6 Department of Neurology, Nanfang Hospital of Southern Medical University, Guangzhou 510515, China.