Text and Data Mining valid from 2018-07-16
Received: 26 March 2018
Accepted: 5 July 2018
First Online: 16 July 2018
Ethics approval and consent to participate
: Approval for the study was granted by the local research ethics committee in accordance with the Helsinki Declaration (2013) [CitationRef removed].
: Survey instructions informed participants of the details of the research study, completion and submission implied consent.
: David Clark, Mike Lambert and Angus Hunter declare that they have no competing interests.
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