Oh, Tak Kyu
Song, In-Ae
Article History
Received: 8 February 2020
Revised: 31 March 2020
Accepted: 2 April 2020
First Online: 4 May 2020
Compliance with ethical standards
:
: None.
: The study protocol was approved by the Institutional Review Board of Seoul National University Bundang Hospital (no. X-1905-541-902) and the Health Insurance Review and Assessment Service (NHIS-2019-2-160).
: Not applicable.
: Informed consent was waived because data analyses were performed retrospectively with anonymous data derived from the South Korean National Health Insurance Service (NHIS) database.