Funding for this research was provided by:
Bill & Melinda Gates Foundation (OPP1107597)
Received: 4 December 2019
Accepted: 16 March 2020
First Online: 9 April 2020
Ethics approval and consent to participate
: All the procedures followed were in accordance with the ethical standards of the Helsinki Declaration. This Project was previously approved by the Ethical Committee on Research of Instituto de Medicina Integral Prof. Fernando Figueira (document number4033–14, CAAE 27026114.4.000.5201), and all participants provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.