Funding for this research was provided by:
National Science Council (104-2314-B-182A-047)
Chang Gung Memorial Hospital, Linkou (CMRPG3E1961)
Text and Data Mining valid from 2018-05-31
Received: 21 November 2017
Accepted: 23 May 2018
First Online: 31 May 2018
Ethics approval and consent to participate
: The data collection and analysis of the study was approved by Institutional Review Board of the Chang Gung Memorial Hospital (IRB No.201600657B0). The consent requirement has been waived according to IRB policy of retrospective chart review study.
: The authors declare that they have no competing interests.
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