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Survival time of esophageal and gastric cancer patients with or without ischemic heart disease. Kaplan–Meier survival plots of cancer patients with or without ischemic heart disease before (A) and after matching (B). P values were calculated using the log-rank test. “No” refers to the group of cancer patients without ischemic heart disease, and “Yes” refers to the group of cancer patients with ischemic heart disease.
