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Effect of intravenous infusion of lidocaine on the time (hours) to (A) first flatus and (B) defecation. A Forest plot with subgroup analysis is divided into two groups, namely, high and low/some-concerned overall RoB. IVF-Lido, intravenous infusion of lidocaine; RoB, risk of bias; SD, standard deviation; CI, confidence interval.
