Funding for this research was provided by:
the research grant from the Faculty of Science, Kasetsart University, Bangkok, Thailand
the Thailand Research Fund through the TRF Research (RTA6080004)
Text and Data Mining valid from 2019-01-21
Received: 11 October 2018
Accepted: 12 January 2019
First Online: 21 January 2019
Compliance with ethical standards
: The authors declare that there are no conflicts of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.