1. Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong, Shantou, Guangdong Province 515041, China
2. Shantou University Medical College, Shantou, Guangdong Province 515031, China
3. Key Laboratory of Carbohydrate and Lipid Metabolism Research of Liaoning Province, Dalian, Liaoning Province 116024, China