Funding for this research was provided by:
Ministry of Science and Technology, Taiwan (MOST 104-2314-B-006-093-MY3)
National Cheng Kung University (NCKUEDA10306)
Text and Data Mining valid from 2019-07-22
Received: 13 February 2019
Accepted: 10 July 2019
First Online: 22 July 2019
Ethics approval and consent to participate
: The study was approved by the institutional review board of National Cheng Kung University Hospital.
: Not applicable.
: The authors declare that they have no competing interests.