Funding for this research was provided by:
Research Trainees Coordinating Centre (DRF-2014-07-003)
Text and Data Mining valid from 2020-04-29
Received: 21 October 2019
Accepted: 19 April 2020
First Online: 29 April 2020
Ethics approval and consent to participate
: Ethical approval for the study was given by the London -Camberwell St Giles Research Ethics Committee (REC reference number: 15/LO/1338). All participants gave written consent.
: Not applicable.
: The authors declare that they have no competing interests.