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Clinical effects of the risk score in the nomograms. Based on the quartile of risk score, three nomograms divide participants into low‐, medium‐ and high‐ risk subgroup, respectively. Clinical utility of these subgroups for predicting LNM and DM is present by constituent ratio, as well as shows significant difference (A‐B). In term of overall survival, Kaplan‐Meier method is used to found out the significance among the different risk subgroups (C)
