Funding for this research was provided by:
National Institute for Health Research (13/07/68)
Text and Data Mining valid from 2019-12-01
Received: 13 February 2019
Accepted: 6 November 2019
First Online: 5 December 2019
Ethics approval and consent to participate
: Ethics letter provided.
: The National Institute for Health Research operates a ‘negative consent’ model, whereby papers are submitted and if—after 30 days—no objections are raised, consent is deemed to have been given. This draft paper has been submitted to NIHR.
: The authors declare that they have no competing interests.