Funding for this research was provided by:
Vision Group on Science and Technology (No. KSTePS/VGST-KFIST (L1) 2016-2017/GRD-559/2017-18/126/333, 21/11/2017.)
Text and Data Mining valid from 2020-01-10
Received: 1 July 2019
Accepted: 25 October 2019
First Online: 10 January 2020
: The authors declare that they have no competing interests.