Funding for this research was provided by:
Eunice Kennedy Shriver National Institute of Child Health and Human Development (UG1HD076474)
Received: 20 September 2020
Accepted: 5 October 2020
First Online: 30 November 2020
Ethics approval and consent to participate
: This study was reviewed and approved by the institutional review boards of participating institutions, including the University of Colorado and the Faculty of Medicina, Universidad Francisco Marroquin, Guatemala. All women provided informed consent prior to enrollment in the study.
: The article was approved for publication by NICHD through its clearance mechanism.
: The authors have no competing interests.