| Affiliation: | 1. Graduate Studies Program in Dentistry, Faculty of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil;2. Graduate Studies Program in Epidemiology, Faculty of Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil;3. Faculty of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil;4. Department of Health and Human Communication, Institute of Psychology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil;5. Center of Community Dental Health Research, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil;6. Department of Preventive and Social Dentistry, Faculty of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil |
