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Therapeutic strategy. GEJ tumours were classified according to the Siewert classification [15].* The clinical tumor–node–metastasis (cTNM) classification we used was based on usTNM classifications for carcinoma of the esophagus [19] and the stomach [20]. Non-traversable tumors were considered cT3N+ as previously published [16].** CT-scans were centrally reviewed according to the RECIST V1.1 criteria by an independent observer blinded to the outcomes prospectively in one center.
