Funding for this research was provided by:
Text and Data Mining valid from 2018-12-01
Received: 28 February 2018
Accepted: 27 November 2018
First Online: 10 December 2018
Ethics approval and consent to participate
: The project was approved by the University of Sunderland Research Ethics Committee. Written consent to participate was not applicable.
: Not applicable.
: The authors declare that they have no competing interests
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