Text and Data Mining valid from 2019-04-08
Received: 27 January 2019
Accepted: 14 March 2019
First Online: 8 April 2019
Ethics approval and consent to participate
: Clinical Research Ethics Committes of East Valladolid Area approved the study. All patients read and signed a consent form prior to their participation<i>.</i>
: Not applicable.
: The authors declare not to have any competing interest.
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