1. Department of Public Health, Graduate Program in Collective Health, Graduate Program in Dentistry, Federal University of Maranhão, São Luis, Maranhão, Brazil
2. Department of Dentistry II, Graduate Program in Collective Health, Graduate Program in Dentistry, Federal University of Maranhão, São Luís, Maranhão, Brazil
3. Graduate Program in Collective Health, Federal University of Maranhão, São Luís, Maranhão, Brazil
4. Department of Social and Preventive Dentistry, Graduate Program in Epidemiology, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
5. Department of Collective Health, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil