Text and Data Mining valid from 2019-01-07
Received: 12 October 2018
Accepted: 28 December 2018
First Online: 7 January 2019
Ethics approval and consent to participate
: This study was approved by the National Taiwan University Hospital Institutional Review Board.
: Not applicable. The study protocol was approved by the Institutional Review Board of National Taiwan University Hospital (No. 201612034RIND) for retrospective analysis.
: The authors declare that they have no competing interests.
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