Funding for this research was provided by:
Health Technology Assessment Programme (10/102/03)
Text and Data Mining valid from 2018-05-29
Received: 3 November 2017
Accepted: 9 May 2018
First Online: 29 May 2018
Ethics approval and consent to participate
: Ethical approval was granted for the study by the Yorkshire and Humber Research Ethics Committee (Reference: 12/ YH/0304). All participants gave written or independently witnessed verbal consent.
: The authors declare that they have no competing interests.
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