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Retrospective Cohort Study
©The Author(s) 2025.
World J Gastrointest Oncol. Sep 15, 2025; 17(9): 109060
Published online Sep 15, 2025. doi: 10.4251/wjgo.v17.i9.109060
Figure 1
Figure 1 Flowchart of the study population selection based on the National Health Insurance Service data for hepatocellular carcinoma. HCC: Hepatocellular carcinoma; ICD: International Classification of Diseases; NHIS: National Health Insurance Service.


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