Fig. 3From: Postoperative survival effect of the number of examined lymph nodes on esophageal squamous cell carcinoma with pathological stage T1–3N0M0Overall survival curve for esophageal squamous cell cancer patients with stage T1–3N0M0 according to the number of examined lymph nodes in the unmatched cohort of Sun Yat-sen University Cancer Center (A), matched patients of Sun Yat-sen University Cancer Center (B), and Surveillance Epidemiology and End Results database (C)Back to article page