Funding for this research was provided by:
The Health Foundation (Grant number: CRM 1838 GIFTS 7471)
Received: 20 March 2019
Accepted: 24 June 2019
First Online: 5 July 2019
Ethics approval and consent to participate
: Ethics Committee Approval: NRES Committee West Midlands- Edgbaston REC reference 10/H1208/41. All patients included in this study gave consent to participate.
: Not applicable.
: The authors declare that they have no competing interests.