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Kaplan-Meier survival curve of (A) OS and (B) RFS for patients with hepatocellular carcinoma accepting RFA. Kaplan-Meier analysis and log-rank test demonstrated a significant difference in OS and RFS among the three groups (P<0.001). OS, overall survival; RFS, recurrence-free survival. CNP, combination of neutrophil to lymphocyte ratio and platelet to lymphocyte ratio; RFA, radiofrequency ablation.
