Funding for this research was provided by:
Chi Mei Medical Center (105-CM-FJU-09)
Text and Data Mining valid from 2019-11-16
Received: 20 February 2019
Accepted: 23 October 2019
First Online: 16 November 2019
Ethics approval and consent to participate
: Since the dataset was released for research purposes and included only scrambled and anonymous information on patient identification, the study was exempt from informed consent from the subjects. Further, the execution of the present study and a waiver of obtaining informed consent from subjects have been approved by the Institutional Review Board of Fu-Jen Catholic University (FJU-IRB NO:C104014).
: Not applicable.
: The authors declare that they have no competing interests.