Funding for this research was provided by:
Ministry of Science and Technology, Taiwan (MOST 106-2410-H-030-065)
Text and Data Mining valid from 2020-01-10
Received: 8 September 2019
Accepted: 3 January 2020
First Online: 10 January 2020
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Fu Jen Catholic University, Taiwan (FJU-IRB C105132), and each subject provided written informed consent before participating. All protocols and procedures were performed according to the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.