Funding for this research was provided by:
Agència de Gestió d’Ajuts Universitaris i de Recerca (2014SGR1227)
Instituto de Investigación Sanitariaria Carlos III (PI15/00285)
Text and Data Mining valid from 2018-03-10
Received: 25 January 2018
Accepted: 2 March 2018
First Online: 10 March 2018
Compliance with Ethical Standards
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee.
: Informed consent was obtained from all individual participants included in the study.