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The ROC curves were drawn by SPSS. (A) Tumor stage (AUC = 0.698, P < 0.001); (B) N stage (AUC = 0.751, P < 0.001); (C) Distant metastasis (AUC = 0.811, P < 0.001); (D) TNM stage (AUC = 0.691, P < 0.001); (E) Cancer status (AUC = 0.749, P < 0.001).
