Funding for this research was provided by:
Secretaría de Estado de Investigación, Desarrollo e Innovación (SEJ2006-14894; PSI2012-37808; PSI2017-83303-C2-2-P)
Text and Data Mining valid from 2018-05-15
Received: 1 December 2017
Accepted: 2 May 2018
First Online: 15 May 2018
Ethics approval and consent to participate
: This study was part of a research project funded by the Spanish Ministry of Education and Science, and was approved by the ethics committee of the coordinating university “Comité de Ética de la Investigación de la Universidad Autónoma de Madrid”. All participants completed an informed consent form, assuring them that all information they provided would remain confidential and anonymous.
: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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