1. From the Singapore Eye Research Institute, Singapore and Singapore National Eye Centre, Singapore; the
2. Wilmer Eye Institute, Dana Center for Preventive Ophthalmology, Johns Hopkins University, Baltimore, Maryland; the
3. State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China; and the
4. From the Singapore Eye Research Institute, Singapore and Singapore National Eye Centre, Singapore; the 4Yong Loo Lin School of Medicine, National University of Singapore, Singapore.