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Authors
Portilla-Saavedra, Diego http://orcid.org/0000-0002-5465-0629
Pinto-Cortez, Cristián http://orcid.org/0000-0003-4311-9135
Guerra, Cristóbal http://orcid.org/0000-0003-1827-0634
Cárdenas, Fabiola Peña http://orcid.org/0000-0001-5895-0816
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Article History
Received: 9 June 2022
Accepted: 29 August 2022
First Online: 7 September 2022
Declarations
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: The Ethics aspect was revised for the Government of Chile. The study has been performed by the ethical standards laid down in the Declaration of Helsinki and its later amendments. Written informed consent asked from the adolescents at the age of 18 years.
: We have the pertinent authorizations, which were requested by means of respective official letters to the Government of Chile. These authorizations consider the possibility of disseminating the data, taking the respective ethical safeguards.
: The authors declare that they have no competing interests.
