Funding for this research was provided by:
National Institute for Health Research (14–04-02)
Text and Data Mining valid from 2019-03-15
Received: 1 November 2018
Accepted: 8 March 2019
First Online: 15 March 2019
Ethics approval and consent to participate
: The study was granted ethical approval by the NHS Wales Research Ethics Committee 7 REC ref.: 15/WA/0427 on 27/11/2015. All participants provided written informed consent to participate in the study.
: All participants provided written and explicit consent for their annonymised data to be used in publications.
: The authors declare that they have no competing interests.
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