1. Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Henan Eye Institute, Henan Eye Hospital, Zhengzhou, China.
2. Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China.
3. Department of Ophthalmology, People's Hospital of Changshou District, Chongqing, China.
4. Centre for Experimental Medicine, Queen's University, Belfast, United Kingdom.