Text and Data Mining valid from 2019-10-11
Received: 19 February 2019
Accepted: 24 September 2019
First Online: 11 October 2019
Ethics approval and consent to participate
: This study was approved by the Ethical Committee of Centro Hospitalar do Porto, Porto, Portugal (IRB: N/REF.ª 2015.221(183-DEFI/165-CES) and written informed consent was obtained from all subjects participating in the trial.
: Not applicable.
: The authors declare that they have no competing interests.