Funding for this research was provided by:
Ministry of Science and Technology, Taiwan (MOST 108-2634-F-002-015)
Text and Data Mining valid from 2019-04-05
Received: 3 January 2019
Accepted: 26 March 2019
First Online: 5 April 2019
Ethics approval and consent to participate
: The study protocol was approved by the Research Ethics Committee of the National Taiwan University Hospital (201707080RINA) and informed consent was waived because of the retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.
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