Funding for this research was provided by:
National Institute for Health Research (PGfAR: RP-PG-1210-1201)
Received: 24 September 2019
Accepted: 24 May 2020
First Online: 8 June 2020
Ethics approval and consent to participate
: Ethical approval was given by NHS North West, Preston Research Ethics Committee. The two phases of the study were conducted under the following research ethics committee approvals: 13/NW/0287 and 16/NW/0061. All participants provided signed informed consent.
: All quotes are anonymised, no personal information was included.
: The author's declare that they have no competing interests.