1. Department of Ophthalmology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
2. Department of Neurology, Fuzhou Second Hospital, Fuzhou, Fujian, China
3. Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, China
4. Department of General Practice, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China