Funding for this research was provided by:
Chang Gung Memorial Hospital, Linkou (CMRPG3H1791)
Text and Data Mining valid from 2019-11-01
Received: 9 August 2019
Accepted: 10 October 2019
First Online: 1 November 2019
Ethics approval and consent to participate
: The study was approved by the Institutional Review Board of the Chang Gung Memorial Hospital (IRB #201801353B0). Due to the retrospective nature of this study, written informed consent from the patients was not necessary.
: Not applicable.
: The authors declare that they have no competing interests.