Funding for this research was provided by:
Ministry of Education
Ministry of Science and Technology, Taiwan (MOST 104-2311-B-005-003-MY3)
Text and Data Mining valid from 2020-02-06
Accepted: 29 January 2020
First Online: 6 February 2020
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: This study did not involve human participants and/or animals.
: All authors consent to this submission.