Text and Data Mining valid from 2019-02-14
Received: 14 December 2018
Accepted: 31 January 2019
First Online: 14 February 2019
Ethics approval and consent to participate
: The study had the approval of the Biomedical Research Ethics Committee of the Hospital La Fe (N<sup>°</sup> IPA-ANT-2014-01).
: All the authors carefully read the manuscript and fully approve of it.
: The authors declare that they have no competing interests.
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