Funding for this research was provided by:
Chulalongkorn University (90th Anniversary of Chulalongkorn University Ratchadaphiseksomphot Endowment Fund)
Thailand Research Fund (MRG5980143)
Text and Data Mining valid from 2018-04-09
Received: 23 November 2017
Accepted: 3 April 2018
First Online: 9 April 2018
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