Funding for this research was provided by:
Conselho Nacional de Desenvolvimento Científico e Tecnológico (140671/2013-7)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (001)
Text and Data Mining valid from 2019-12-01
Received: 5 May 2019
Accepted: 18 November 2019
First Online: 2 December 2019
Ethics approval and consent to participate
: This research was approved by the Scientific Research Ethics Committee of the National Public Health School Sergio Arouca (Comitê de Ética em Pesquisa Científica da Escola Nacional de Saúde Pública Sergio Arouca - CAEE), reference number: 1.145.866. Amendment number: 1.387.732. All participants were informed about the objectives, procedures, risks and benefits of the study, and a written free and informed consent was obtained from all participants.
: Not applicable<b>.</b>
: The authors declare that they have no competing interests.