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Patients flow diagram.
RFA, radio-frequency ablation; TACE, trans-arterial chemo-embolization; PEI, percutaneous ethanol injection; CTP, Child-Turcotte-Pugh; BCLC, Barcelona Clinic Liver Cancer; HCC, hepatocellular carcinoma; HBV, hepatitis B virus; HCV, hepatitis C virus; AS score, assessment for surveillance interval score.
