Article History
Received: 4 July 2019
Revised: 26 May 2020
Accepted: 12 October 2020
First Online: 3 May 2021
Conflict of Interest
: The authors declare no conflict of interest.
: The study obtained an ethical approval by King Juan Carlos University.
: All participants signed an informed consent ensuring confidentiality and anonymity, aligned with the Helsinki protocol and the Data Protection Policies in Spain.