About the Authors

Márcio de Almeida Mendes

marciopenha.esef@yahoo.com.br

Affiliation Graduate Program in Epidemiology, Federal University of Pelotas, Rio Grande do Sul, Brazil

Inácio Crochemore Mohnsam da Silva

Affiliation Graduate Program in Epidemiology, Federal University of Pelotas, Rio Grande do Sul, Brazil

Pedro Curi Hallal

Affiliation Graduate Program in Epidemiology, Federal University of Pelotas, Rio Grande do Sul, Brazil

Elaine Tomasi

Affiliation Graduate Program in Epidemiology, Federal University of Pelotas, Rio Grande do Sul, Brazil

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MAM ICMS PRCH ET. Performed the experiments: MAM ICMS PRCH ET. Analyzed the data: MAM ICMS PRCH ET. Contributed reagents/materials/analysis tools: MAM ICMS PRCH ET. Wrote the paper: MAM ICMS PRCH ET.