1. Department of Preventive and Social Dentistry, Faculty of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
2. Graduate Program in Nursing Public Health, School of Nursing at Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
3. Graduate Program in Collective Health, School of Nursing, Federal University of Rio Grande do Sul, Porto Alegre, Brazil