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Comparison of cancer free survival rate in the radiofrequency thermal ablation (RFTA), percutaneous ethanol injection (PEI), and percutaneous acetic acid injection (PAI) groups. Cancer free survival rate was significantly higher in the RFTA group compared with the two other groups (RFTA v PEI group, p = 0.038; RFTA v PAI, p = 0.041). Differences between the three groups were significant (p = 0.039).
