Funding for this research was provided by:
Durham University (Durham Doctoral Studentship)
Biosocial Society (Postgraduate Fieldwork Bursary)
National Institute for Health Research (Clinical Research Network Portfolio)
Received: 28 January 2019
Accepted: 30 April 2019
First Online: 15 May 2019
Ethics approval and consent to participate
: All participants provided written informed consent prior to participation. The study was approved by the South Central Oxford B NHS Research Ethics Committee (reference number 16/SC/0355).
: Not applicable.
: The authors declare they have no competing interests.
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