Received: 7 January 2020
Accepted: 23 June 2020
First Online: 2 July 2020
Change Date: 5 May 2021
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1186/S12888-021-03238-7
Ethics approval and consent to participate
: The study was approved by the Research Ethics Committee on Human Beings of the San Francisco University of Quito with authorization number 2016-176PG. Written informed consents were given to the parents of minor students during class hours, and to seniors on the same day of the evaluation. The meaning of the investigation was explained, and their participation was invited anonymously and voluntarily, resulting in a 50% participation. Subsequently, the questionnaires were distributed on paper, and during its completion the main author of the study remained in place with the intention of resolving any doubt or difficulties.
: Written informed consents were given to the parents of minor students during class hours, and to seniors on the same day of the evaluation.
: The authors declare that they have no competing interests.