Funding for this research was provided by:
University of Dundee
Text and Data Mining valid from 2019-01-29
Received: 3 January 2019
Accepted: 8 January 2019
First Online: 29 January 2019
Conflict of interest
: M. El Boghdady, B.M. Ewalds-Kvist, and A. Alijani declare that they have no competing interests.