Text and Data Mining valid from 2019-08-24
Received: 7 May 2019
Accepted: 15 August 2019
First Online: 24 August 2019
Ethics approval and consent to participate
: The study was approved by the Regional Committees for Medical and Health Research Ethics (REC) (ref. number: 2013/1371) and all patients gave written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.