Funding for this research was provided by:
National Institute for Health Research
Received: 16 April 2018
Accepted: 29 September 2018
First Online: 19 October 2018
Ethics approval and consent to participate
: Study protocol version 1.2 (25/09/2017) has been approved by the NHS Health Research Authority and received a favourable ethical opinion from the West Midlands Solihull Research Ethics Committee on October 24, 2017 (Ref: 17/WM/0338). Research governance approval was obtained from University Hospitals Birmingham NHS Foundation Trust in February 2018 (Ref: RRK6080). The study is sponsored by the University of Birmingham. Responsibility for the conduct of the research, analysis of the data and publication of the findings will remain with the research team and steering group.
: Not applicable.
: The authors declare that they have no competing interests.
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