Funding for this research was provided by:
Ministry of Higher Education, Malaysia (UTM Shine Signature Grant (Q.J130000.2454.07G73), UTM IIIG grant (Q.J130000.3054.01M19))
Text and Data Mining valid from 2020-02-06
Received: 29 October 2019
Revised: 21 January 2020
Accepted: 24 January 2020
First Online: 6 February 2020
Compliance with Ethical Standards
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.