1. Centre for Vision Research, Department of Ophthalmology, The Westmead Institute for Medical Research The University of Sydney, Westmead Hospital Westmead New South Wales Australia
2. Singapore Eye Research Institute Singapore Singapore
3. School of Public Health The University of Sydney Sydney New South Wales Australia
4. Department of Ophthalmology Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
5. Ophthalmology and Visual Sciences Academic Clinical Program Singapore National Eye Centre, Duke‐NUS Medical School Singapore Singapore
6. Health Services and Systems Research Duke‐NUS Medical School Singapore Singapore