Funding for this research was provided by:
Bill and Melinda Gates Foundation, United States (OPP1164115)
Received: 15 February 2021
Accepted: 9 September 2021
First Online: 23 September 2021
: The study was approved by the Institutional Review Boards of Emory University (Atlanta, GA) and INCAP (Guatemala City, Guatemala). All participants gave written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.