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Calibration curves for predicting 1-, 2-, 3- and 5- year RFS in the training and validation cohorts (A). Time-dependent ROC curves by nomogram and AFP/tumor number/size for 1-, 2-, 3-, and 5-year RFS in the training (B) and validation cohorts (C). RFS, recurrence-free survival; ROC, receiver operating characteristic; AFP, alpha-fetoprotein.
