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Article History

Received: 14 March 2018

Accepted: 25 October 2018

First Online: 7 November 2018

Ethics approval and consent to participate

: All the students were informed of the aims of the study and participated voluntarily. The completion of the questionnaire was considered to imply informed consent. The study worked with anonymised information. This research was conducted according to the guidelines laid down in the Declaration of Helsinki. The Clinical Research Ethics Committee of the Health Unit of Cuenca certified that the study doesn’t need ethics approval according to national guidelines (nr: 2018/P1018).

: Not applicable.

: The authors declare that they have no competing interest.

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