Funding for this research was provided by:
Health Services and Delivery Research Programme (14/156/32)
Received: 21 August 2018
Accepted: 3 March 2019
First Online: 12 March 2019
Ethics approval and consent to participate
: Ethics approval was required for the study and this was granted by the Yorkshire & Humber – Bradford Leeds Research Ethics Committee on 04/11/2016. The Health Research Authority granted approval on 25/11/2016. All participants gave informed, written consent to take part in this study.
: No individualised data is presented in this paper.
: The authors declare they have no competing interests.
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