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Kaplan–Meier survival curves for patients undergoing esophagectomy. A: Overall survival curves comparing those with and without pneumonia. B: Relapse-free survival curves comparing those with and without pneumonia. C: Overall survival curves comparing those with and without anastomotic leakage. D: Overall survival curves comparing those with and without recurrent laryngeal nerve paralysis. RLNP = recurrent laryngeal nerve paralysis.
