Published on in Vol 23, No 6 (2021): June
1 Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore, Singapore
2 Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research, Singapore, Singapore
3 Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
4 Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Singapore
5 Department of Pediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
6 Duke-NUS Medical School, Singapore, Singapore
*these authors contributed equally