1. From the Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore; the 2Department of Epidemiology, School of Health and Nutrition, Shiraz University of Medical Sciences, Shiraz, Iran; the
2. From the Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore; the 3Yong Loo Lin School of Medicine, National University of Singapore and National University Health System, Singapore; the
3. Singapore Eye Research Institute, Singapore National Eye Centre, Singapore;
4. Medicine, Yong Loo Lin School of Medicine, National University of Singapore and National University Health System, Singapore; the
5. Department of Statistics and Applied Probability, National University of Singapore, Singapore; and the
6. Centre for Eye Research Australia, University of Melbourne, Royal Victorian Eye and Ear Hospital, East Melbourne, Victoria, Australia; the 9Centre for Vision Research, University of Sydney, Sydney, Australia.
7. Centre for Vision Research, University of Sydney, Sydney, Australia.