Funding for this research was provided by:
Research Trainees Coordinating Centre (137/060)
Received: 3 June 2019
Accepted: 30 August 2020
First Online: 14 September 2020
Ethics approval and consent to participate
: Favourable ethical opinion for this study was granted by the West Midlands Research Ethics Committee in March 2010 (ref: 10/H1208/3).All participants provided written informed consent to take part in this interview study.
: Not applicable.
: All authors have declared that there were no competing interests.