Published on in Vol 22, No 5 (2020): May
1 Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
2 Centre for Population Health Sciences, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
3 Family Medicine and Primary Care, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
4 Department of Ophthalmology, Tan Tock Seng Hospital, Singapore, Singapore
5 Department of Primary Care and Public Health, School of Public Health, Imperial College London, London, United Kingdom