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a The 10-year distant metastasis-free survival was 74% (95% CI, 62–86%) in CNLN patients and 97.7% (95% CI, 96.9–98.5%) in the Non-CNLN patients (p < 0.001). b The 10-year overall survival was 81.1% (95% CI, 71.1–91.1%) in CNLN patients and 99.2% (95% CI, 98.6–99.8%) in the non-CNLN patients (p < 0.001)
