Funding for this research was provided by:
Research Trainees Coordinating Centre (DRF-2015-08-182)
Article History
Received: 24 May 2018
Accepted: 24 September 2018
First Online: 13 October 2018
Ethics approval and consent to participate
: This research study has been granted ethical approval by London-Camden and Kings Cross Research Ethics Committee (reference: 17/LO/0357). This study is sponsored by the University College London Joint Research Office, UCL, Gower Street, WC1E 6BT. See study protocol for information on consent.
: Not applicable.
: The authors declare that they have no competing interests.
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