1. Paediatric Dentistry & Orthodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
2. Center for Evidence Synthesis in Health, School of Public Health, Brown University, Providence, RI, USA
3. Department of Social Medicine and Health Education, School of Public Health, Peking University, Beijing, China
4. Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA, USA
5. Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden
6. Department of Infectious Diseases, Karolinska University Hospital, Huddinge, Sweden