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Analysis of disease-free survival in PTC patients. The disease-free survival curve was assessed by Kaplan-Meier and log-rank test, based on age (A), sex (B), tumor diameter (C), thyroid capsular invasion (D), extrathyroidal extension (E), lymph node metastasis (F), TNM stage (G), and SMYD2 expression level (H). * P<0.05 by log-rank test.
