Received: 18 June 2018
Accepted: 13 November 2018
First Online: 24 November 2018
Ethics approval and consent to participate
: The participating patients gave their written informed consent before their selection. The data of the patients were anonymized for the purposes of this analysis. The confidential information of the patients was protected according national normative. This clinical study was approved by the Clinical Research Ethics Committee of Bellvitge University Hospital.
: Not applicable.
: The authors declare that any of them have any competing interests related with this publication.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.