1 Department of Community and Preventive Dentistry, School of Dentistry, University of the State of Rio de Janeiro - UERJ, Rio de Janeiro, Brazil.
2 Department of Orthodontics and Paediatric Dentistry, School of Dentistry, University of São Paulo - USP, São Paulo, Brazil.
3 Department of Epidemiology, Institute of Social Medicine, University of the State of Rio de Janeiro - UERJ, Rio de Janeiro, Brazil.
4 Department of Epidemiology and Quantitative Methods in Health, National School of Public Health, Oswaldo Cruz Foundation - FIOCRUZ, Rio de Janeiro, Brazil.