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Overall and disease-free survival times of patients according to the tumor, node, metastasis (TNM) stage. (A) In advanced TNM stage patients, survival times were significantly lower than TNM Stage I ones (p < 0.001, Log Rank). (B) Likewise, disease-free survival time was significantly shorter in patients with TNM Stage IV than those in Stage I (p < 0.001, Log Rank). Quantitative data were expressed as mean ± standard deviation.
