Funding for this research was provided by:
Engineering and Physical Sciences Research Council (EP/P001653/1)
Carnegie Trust for the Universities of Scotland (RIG007428)
Text and Data Mining valid from 2019-10-29
Received: 5 February 2019
Accepted: 3 October 2019
First Online: 29 October 2019
Change Date: 20 November 2019
Change Type: Correction
Change Details: An amendment to this paper has been published and can be accessed via a link at the top of the paper.
: The authors declare no competing interests.