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Kaplan–Meier curves were generated by GraphPad Prism. (A) Tumor stage (HR = 5.074, P < 0.001); (B) Lymphatic stage (HR = 4.994, P < 0.001); (C) Metastasis (HR = 114.966, P < 0.001); (D) TNM stage (HR = 6.473, P < 0.001); (E) Cancer status (HR = 15.389, P < 0.001).
