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Article History

Received: 23 July 2019

Accepted: 22 November 2019

First Online: 6 January 2020

Ethics approval and consent to participate

: For the example illustrating the proposed methodology, data from the The Chilean Dental Study were used. That study was approved by the Comité de Ética de Investigación en Seres Humanos [<i>Ethics Committee for Research on Human Beings</i>] of the Facultad de Medicina [<i>School of Medicine</i>]]of the Universidad de Chile [<i>University of Chile</i>]. In that study, educational establishments were approached for consent to participation. All eligible children of a participating school were invited to participate. Written informed consent was obtained from parents, and verbal assent approval was obtained from children. As mentioned in the manuscript, refusal (by parents) rates were less than 1%.

: The manuscript is not using any details, images, or videos relating to an individual person; thus, informed consent for publication is not applicable.

: The authors declare that they have no competing interests.