Funding for this research was provided by:
Centers for Disease Control and Prevention (5U01GH001003-04)
Foundation for the National Institutes of Health (D43TW009343)
Received: 31 July 2019
Accepted: 17 December 2019
First Online: 23 December 2019
Ethics approval and consent to participate
: This study was reviewed and approved by the Universidad del Valle de Guatemala Comité de Ética en Investigación. Participants provided written informed consent prior to data collection, according to the norms for Human Experimentation, Code of Ethics of the World Medical Association (Declaration of Helsinki, 1995).
: Not applicable.
: The authors declare no conflict of interests.