Funding for this research was provided by:
Ministry of Science and Technology, Taiwan (104-2410-H-010 -003 -MY2, 105-2221-E-002-104, 103-2628-B-002-002-MY3, 106-2420-H-010 -002 -MY2)
Text and Data Mining valid from 2019-09-13
Received: 2 July 2018
Accepted: 12 July 2019
First Online: 13 September 2019
: The authors declare no competing interests.