1. Department of Dentistry, Ng Teng Fong General Hospital and Faculty of Dentistry, National University Health System, Singapore
2. National Dental Research Institute, National Dental Centre Singapore and Duke-NUS Medical School, SingHealth, Singapore
3. School of Health and Social Sciences, Nanyang Polytechnic, Singapore
4. Duke-NUS Medical School, SingHealth, Singapore
5. School of Health and Social Sciences, Nanyang Polytechnic, and Faculty of Dentistry, National University of Singapore, Singapore