1. Department of Epidemiology, Institute of Social Medicine, University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
2. Department of Epidemiology, National School of Public Health, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
3. Department of Community and Preventive Dentistry, Faculty of Dentistry, University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
4. Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom