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Receiver operating characteristic (ROC) curves of TNM stage and the nomogram of the CSS. AUC values of ROC predicted 1-, 3-, and 5-year CSS rates of the nomogram and TNM stage in the training cohorts (A–C); AUC values of ROC predicted 1-, 3-, and 5-year CSS rates of the nomogram and TNM stage in the internal validation cohorts (D–F); AUC values of ROC predicted 1-, 3-, and 5-year CSS rates of the nomogram and TNM stage in the external validation cohorts (G–I).
