Funding for this research was provided by:
Ministry of Science and Technology, Taiwan (106-2917-I-564-017)
Text and Data Mining valid from 2019-03-08
Received: 20 September 2018
Accepted: 3 February 2019
First Online: 8 March 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: All authors certify and assert that no animals or humans were used to obtain results reported in this research.