HIGHLIGHTS
- who: Jooyoung Lee from the Data source This is a retrospective cohort study using the National Health Insurance Service (NHIS)`s sample database, which consisted of, , subjects from , to The NHIS is the public medical insurance system managed by the Korean government, providing a compulsory insurance system for all residents in Korea. The NHIS also regularly provides free, standardized health checkups for all insured persons. This study was approved by the Institutional Review Board of Chung-Ang University Hospital (IRB No., ), and informed consent was waived. This study adheres to the guidelines of the Declaration of Helsinki . . .
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