Funding for this research was provided by:
University of Hertfordshire (PhD studentship)
Text and Data Mining valid from 2019-11-09
Received: 24 May 2019
Accepted: 24 October 2019
First Online: 9 November 2019
Compliance with Ethical Standards
: The authors declare that they have no conflict of interest.
: The chewing study was approved by the University of Hertfordshire Ethics Committee (LMS/PGR/UH/02759).
: Written informed consent was obtained from each participant before any study-related procedures were performed.