Funding for this research was provided by:
Ministry of Science and Technology, Taiwan (MOST 106-2314-B-002-180-MY3)
Received: 22 October 2018
Accepted: 27 August 2019
First Online: 23 September 2019
Ethics approval and consent to participate
: The research was approved by the institutional review board of National Taiwan University Hospital (IRB NO. 201707033 RINB). The need for informed consent was waived due to the retrospective nature of the research. The data were processed and analyzed anonymously.
: Not applicable
: All authors declare that they have no competing interests.