Received: 17 September 2019
Accepted: 19 May 2020
First Online: 20 June 2020
Ethics approval and consent to participate
: The research, biosecurity, and ethics committees of the National Institute of Public Health (INSP, by its Spanish acronym) in Cuernavaca, Morelos, Mexico, approved the 2012 ENSANUT. The parents or guardians of the children signed an informed consent.
: Not applicable.
: The authors declare having no competing interests.