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Article History

Received: 1 July 2020

Accepted: 3 March 2021

First Online: 24 March 2021

Declarations

:

: An informed consent notice was presented at the online questionnaire before the start of the survey to advise that participation in the study was voluntary and anonymous and that the participants could leave the study whenever they wished. Completing this part was obligatory to continue with the questionnaire. The study and the method of obtaining consent was approved by the Ethics Committee of the <i>Universidad Europea de Madrid</i> (Madrid, Spain) (registry: CIPI/038/17).

: Not applicable.

: The authors declare that they have no competing interests.