Funding for this research was provided by:
Spanish Ministry of Health, Instituto de Salud Carlos III (PI15/00625, PS09/01035)
Text and Data Mining valid from 2018-03-12
Received: 24 August 2017
Accepted: 27 February 2018
First Online: 12 March 2018
: The authors declare that they have no competing interests.
: Ethics approval was obtained from the Human Research Ethics Committee of University Hospital of Arnau de Vilanova (Lleida) with the reference number 12/2009, in accordance with the Declaration of Helsinki, and informed consent to participate was obtained from each patient included in the investigation.
: Not applicable.
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