1. Beijing Tongren Eye Center; Beijing Tongren Hospital; Capital Medical University; Beijing Ophthalmology and Visual Sciences Key Laboratory; Beijing China
2. Department of Neurobiology; School of Basic Medical Sciences; Capital Medical University; Beijing China
3. Department of Ophthalmology; Medical Faculty Mannheim of the Ruprecht-Karls-University Heidelberg; Mannheim 68167 Germany
4. Department of Neurology; Beijing Tongren Hospital; Capital Medical University; Beijing China
5. Department of Epidemiology and Biostatistics; School of Public Health and Family Medicine; Capital Medical University; Beijing China
6. Einhorn Clinical Research Center; New York Eye and Ear Infirmary; New York NY USA
7. Department of Ophthalmology; the New York Medical College; Valhalla NY USA