Funding for this research was provided by:
National Institute for Health Research (RP-PG-0608-10020)
Text and Data Mining valid from 2018-11-13
Received: 13 April 2018
Accepted: 22 October 2018
First Online: 13 November 2018
Ethics approval and consent to participate
: Ethics approved by National Research Ethics Service West Midlands, Solihull (REC, 25/09/2012, ref.: 12/WM/0286). Written informed consent was obtained by all human subjects before the research began.
: Not applicable
: The authors declare that they have no competing interests.
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