Funding for this research was provided by:
UK National Institute for Health Research (12/150/04)
Received: 3 October 2018
Accepted: 13 August 2019
First Online: 22 August 2019
Ethics approval and consent to participate
: Ethical approval was provided by De Montfort University (13450) and the National Research Ethics Committee East Midlands (Nottingham) (project ID 152836; NRES: 14/EM/1202). All participants provided written informed consent.
: Not applicable
: The authors declare they have no competing interests.