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Multivariate analyses of factors for tumor-involved or uncheckable lateral resection margins, tumor-involved or uncheckable deep resection margins, and piecemeal resection
OR = odds ratio; CI = confidence interval; ESD = endoscopic submucosal dissection; EMR = endoscopic mucosal resection; NS = not significant in multivariate logistic-regression models with the use of a forward-selection procedure; NA = not applicable.
