Funding for this research was provided by:
National Institute for Health Research (PR-R10-0514-12006)
Text and Data Mining valid from 2019-10-28
Received: 22 August 2018
Accepted: 3 October 2019
First Online: 28 October 2019
Ethics approval and consent to participate
: Favourable ethical opinion for the study was provided by the Leeds/Bradford NHS Research Ethics Committee in November 2015 (reference 17/YH/0366). All participants gave informed consent to take part in the study.
: Written informed consent.
: The authors declare that they have no competing interests.