Funding for this research was provided by:
Secretaría de Estado de Investigación, Desarrollo e Innovación (PSE-010000-2006-6, IPT-010000-2010-36)
Ministerio de Economía y Competitividad (SEV-2011-00067)
Agència de Gestió d’Ajuts Universitaris i de Recerca (FI-DGR 2013)
Text and Data Mining valid from 2018-05-30
Received: 28 February 2018
Accepted: 23 April 2018
First Online: 30 May 2018
Ethics approval and consent to participate
: All the procedures were followed in compliance with the principles of the Declaration of Helsinki and informed consent was obtained from all participants. The study and the consent procedure were reviewed and approved by the local institutional review boards.
: The authors declare that they have no competing interests.
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