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Kaplan–Meier OS curves of gastric cancer patients with nodal statuses classified according to different staging systems. a UICC/AJCC-pN staging, b LNR staging, c LODDs staging, d revised N staging. pN pathological lymph node classification based on the 8th edition of the Union for International Cancer Control/American Joint Committee on Cancer classification, LNR lymph node ratio, LODDs log odds of metastatic lymph nodes, rN revised lymph nodal stage
