1. Dental Public Health, Faculty of Dentistry, University of Hong Kong
2. Department of Preventive Dentistry, Faculty of Dentistry, National University of Singapore, 5 Lower Kent Ridge Road, Republic of Singapore 119074
3. Department of Information Systems, School of Computing, National University of Singapore, and School of Management, Fudan University
4. Department of Decision Sciences, School of Business, National University of Singapore
5. Department of Epidemiology and Public Health, Yong Loo Lin School of Medicine, National University of Singapore