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The 3-year recurrence-free survival (RFS) analyses for pre-operative plasma miRNAs. Kaplan–Meier analysis was made in CRC patients (N=122). (A–D) Higher pre-operative plasma miR-29a (P<0.01), miR-203 (P<0.01), miR-31 (P<0.01) and miR-200b (P=0.05) predict a shorter RFS. For each miRNA, the median value was used to divide the samples into those with high or low levels. The number of patients at risk is shown below each curve.
