Funding for this research was provided by:
Ministry of Science and Technology, Taiwan (106-2314-B-002 -130 -MY3)
National Taiwan University Hospital (106-N3680)
Received: 1 October 2018
Accepted: 31 January 2019
First Online: 13 February 2019
Ethics approval and consent to participate
: This research protocol has been reviewed and approved by the Research Ethics Committee of the National Taiwan University Hospital and in compliance with the categories of exempt in accordance with regulations of our hospital and National Health Research Institutes. We also follow the Computer-Processed Personal Data Protection Law and related regulations of National Health Insurance Administration and National Health Research Institutes. National Health Research Institutes granted the administrative permission to access the raw data from NHIRD. Since identification numbers in the NHIRD were de-identified before they were released for research to ensure confidentiality, the need for informed consent was waived by the IRB.
: Not applicable.
: All authors have completed and submitted the ICMJE form for disclosure of potential conflicts of interest and none were reported.
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