Text and Data Mining valid from 2018-05-28
Received: 25 January 2018
Accepted: 23 May 2018
First Online: 28 May 2018
Ethics approval and consent to participate
: This study was approved by the local ethics authorities (Ethics Committee of the University Hospital Arnau de Vilanova in Lleida, No 1611). All data-analysis was performed anonymously without an additional informed consent, according to the local ethical recommendations.
: The authors declare that they have no competing interests.
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