Funding for this research was provided by:
National Science Foundation of Sri Lanka (CCR-0120778)
Gulf Research Program (2000009659)
Text and Data Mining valid from 2020-02-05
Version of Record valid from 2020-02-05
Article History
Received: 25 July 2019
Revised: 9 January 2020
Accepted: 14 January 2020
First Online: 5 February 2020