Funding for this research was provided by:
National Institute for Health Research (GHRG-16-137-99)
CNPq-Brazilian MoH-Gates Foundation (401739-2015-5)
Wellcome Trust (202912-Z-16-Z)
Ministério da Saúde (-)
Received: 9 October 2019
Accepted: 15 June 2020
First Online: 31 July 2020
Ethics approval and consent to participate
: Vigitel was approved by the National Human Subject Research Ethics Committee (Processes 13081/2008 and 355,590/2013). All individuals were consulted by phone, the survey was clarified to them, and they agreed to participate.
: Not applicable.
: The authors declare that they have no competing interests.