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Authors
Chen, Yi-Chuan
Chen, Tien-Hsing
Sun, Chi-Chin
Chen, Jau-Yuan
Chang, Shy-Shin
Yeung, Ling
Tsai, Yi-Wen
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Article History
Received: 7 December 2019
Accepted: 1 April 2020
First Online: 21 April 2020
Compliance with ethical standards
:
: The authors have no conflict of interest to declare.
: The protocol performed in this nationwide population-based retrospective cohort study was in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The protocol of this nationwide population-based retrospective cohort study was approved by the Ethics Institutional Review Board of Chang Gung Memorial Hospital (201700350B0).
: The institutional review board of Chang Gung Medical Foundation determined that patient consent was not required because all data were anonymized by the data holder, the Taiwan National Health Insurance Administration.
