Funding for this research was provided by:
Kaohsiung Medical University Research Foundation (KMU-Q105015)
Chi-Mei Medical Center (106CM-KMU-13)
Text and Data Mining valid from 2019-05-04
Received: 17 August 2018
Accepted: 9 April 2019
First Online: 4 May 2019
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board at the Chi-Mei Medical Center. We conducted this study strictly according to the Declaration of Helsinki. This is a secondary data analysis article from the NHIRD and all necessary permissions were obtained to access and use the data. Informed consents from the participants are waived because the NHIRD contains de-identified information, which does not affect the rights and welfare of the participants.
: Not Applicable.
: The authors declare that they have no competing interests.
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