Funding for this research was provided by:
Public Health Agency (CDV/5137/15)
Received: 20 April 2018
Accepted: 24 November 2018
First Online: 18 December 2018
: Not applicable
: Ethical approval for this trial was provided by South Central – Berkshire Research Ethics Committee. Informed consent will be obtained prior to trial participation.
: Consent for publication is not applicable as only anonymised data will be published.
: The authors declare that they have no competing interests.
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