Funding for this research was provided by:
Wellcome Trust (105613/Z/14/Z)
Received: 4 November 2017
Accepted: 17 December 2018
First Online: 12 February 2019
: Dr. Aimee Grant (GrantA2@cardiff.ac.uk); Dr. Melanie Morgan (MorganML1@cardiff.ac.uk); Dr. Dunla Gallagher (D.Gallagher@qub.ac.uk) and Dr. Dawn Mannay (MannayDI@cardiff.ac.uk).
: This study was awarded ethical approval by Cardiff University School of Medicine ethics committee. All participants provided written consent to participate in the study, and for their interviews to be audio recorded.
: all participants were given the option of allowing verbatim quotations to be used in publications. All participants provided this consent in writing.
: The authors declare that they have no competing interests.
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