Funding for this research was provided by:
Poctefa (REFBIO EFA 237/11)
Instituto Salud Carlos III (PI15/02196)
Text and Data Mining valid from 2018-03-27
Received: 24 October 2016
Accepted: 7 March 2018
First Online: 27 March 2018
Ethics approval and consent to participate
: This study, which was observational in design, retrospective in nature; and used data irreversibly anonymized prior to transfer to the research team, was conducted in accordance with the amended Helsinki Declaration, International Guidelines for Ethical Review of Epidemiological Studies and Spanish laws on data protection and patients’ rights. The study protocol was approved by the Ethics Committee of Navarre (Project 67/2013, session on October 30th, 2013).
: Not applicable.
: The authors declare that they have no competing interests.
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