1. National University of Singapore, Saw Swee Hock School of Public Health, Singapore;
2. University of Southern California, Center for Economic and Social Research, Washington, DC, USA;
3. National University of Singapore, Yong Loo Lin School of Medicine, Singapore;
4. National University Health System, Division of Endocrinology, University Medicine Cluster, Singapore;
5. National University of Singapore, Department of Pharmacy, Faculty of Science, Singapore