Funding for this research was provided by:
GB Department of Health England
Received: 23 July 2018
Accepted: 20 February 2019
First Online: 4 March 2019
Ethics approval and consent to participate
: Ethical approval for the study was obtained from the NRES committee for Yorkshire and The Humber – Humber Bridge (REC reference 14/YH/0065) on 28 February 2014, with an amendment passed by the same committee on 12 May 2014. Participants consented to participate through the voluntary completion and return of their questionnaire.
: Not applicable.
: The authors declare that they have no competing interests.
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