Received: 4 July 2019
Accepted: 9 December 2019
First Online: 19 December 2019
Ethics approval and consent to participate
: The research was conducted in accordance with guidelines laid down by the Declaration of Helsinki. Consent for participation in the surveys was obtained by the Colombian Institute of Family Welfare prior to enrollment (Instituto Colombiano de Bienestar Familiar –ICBF). The ethics committee in health research at the Industrial University of Santander determined that the analyzes of these de-identified data were exempt from review.
: Not applicable.
: The authors declare that they have no competing interests.