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Kaplan-Meier survival curves for Recurrence-Free Survival RFS. (A) RFS in the whole population; (B) RFS according to the number of metastatic sites; (C) RFS according to the five-factors prognostic score. RFS, Recurrence-Free Survival; mFRS, Median Recur-rence-Free Survival; mo, Months; CI, Confidence Interval; HR Hazard ratio.
