Funding for this research was provided by:
Bill & Melinda Gates Foundation (OPP1148933)
Wellcome Trust (101815/Z/13/Z)
Associação Brasileira de Saúde Coletiva
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Received: 24 November 2020
Accepted: 1 April 2021
First Online: 17 April 2021
: The study was based on an anonymized publicly available data. Ethical clearance was done by each of the institutions responsible for carrying out the original surveys.
: Not applicable.
: We have no competing interest to declare.