1. Department of Public Health, School of Medicine, Federal University of Maranhão, São Luís 65020-905, MA, Brazil
2. Department of Public Health, Postgraduation Program in Collective Health, Federal University of Maranhão, São Luís 65020-905, MA, Brazil
3. Health Sciences Center, Nutrition Department, Federal University of Piauí, Teresina 64049-550, PI, Brazil