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. 2020 Mar 30;20:104. doi: 10.1186/s12935-020-01179-x

Fig. 5.

Fig. 5

Evaluation and validation of the 4-gene signature risk model of OS. a The ROC curves are shown for risk score model in training set. b, c Kaplan–Meier analysis for the overall survival of OS patients in training set (b) and validation set (c)