1. Faculty of Dentistry, The University of Hong Kong, Hong Kong, Hong Kong SAR,China
2. Center for Evidence Synthesis in Health, School of Public Health, Brown University, Providence, Rhode Island, USA
3. Department of Health Promotion, Education, and Behavior, South Carolina SmartState Center for Healthcare Quality (CHQ), University of South Carolina, Columbia, South Carolina, USA
4. Department of Psychology and Human Development, Vanderbilt University, Nashville, Tennessee, USA
5. Immersion Resources, Vanderbilt University, Nashville, Tennessee, USA
6. Department of Social Medicine and Health Education, School of Public Health, Peking University, Beijing, China