1. Department of Neurology, Zhujiang Hospital, Southern Medical University, Guangzhou, PR China
2. Second Clinical College, Southern Medical University, Guangzhou, PR China
3. Second School of Clinical Medicine, Southern Medical University, Guangzhou, PR China
4. Shenzhen Hospital, Southern Medical University, Guangzhou, PR China
5. Department of Neurology, Shunde Hospital, Southern Medical University, Foshan, PR China