Funding for this research was provided by:
U.S. Environmental Protection Agency (RD834800, RD83543601)
National Institute of Environmental Health Sciences (P01 ES02284401, P30 ES017885, P20 ES018171)
the National Institute of Public Health, Ministry of Health of Mexico
Received: 10 June 2020
Accepted: 30 October 2020
First Online: 25 November 2020
Ethics approval and consent to participate
: Research protocols were approved by the Institutional Review Board at University of Michigan, and the Research, Biosafety and Ethics in Research at the Mexico National Institute of Public Health. Prior to enrollment, informed consent from mothers and informed assent from offspring were obtained.
: Not applicable.
: The authors declare that they have no competing interests.