Funding for this research was provided by:
National Institutes of Health (NIH R01DK108148)
Received: 29 November 2019
Accepted: 28 April 2020
First Online: 12 May 2020
Ethics approval and consent to participate
: The study protocol, questionnaires, procedures, and informed consent forms were approved by the corresponding IRBs of all participating institutions: the Mexican Social Security Institute (12CEI 09 006 14), the National Institute of Public Health (13CEI 17 007 36), and the Autonomous University of the State of Mexico (1233008X0236). All participants signed an informed consent to enroll in the study.
: Not applicable.
: The authors declare that they have no competing interests.