Funding for this research was provided by:
Gobierno de Aragón
Text and Data Mining valid from 2019-07-30
Received: 14 March 2019
Accepted: 18 July 2019
First Online: 30 July 2019
Ethics approval and consent to participate
: All participants were asked and signed an informed consent, containing a statement that the project is research and participation is voluntary, a summary of the purpose of the research, procedures, and duration of participation and other relevant features.
: Not applicable.
: The authors declare that they have no competing interests.