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BACKGROUND Whether a transumbilical or periumbilical incision is beneficial for the initial peritoneal access in laparoscopic abdominal surgery has been debated. Our aim is to determine whether a transumbilical or periumbilical incision is a better route for the initial umbilical trocar. METHODS PubMed, Embase, and Cochrane Library databases were searched for articles published before March 2020. The meta-analysis calculated the pooled effect size by using a random effects model. RESULTS Five trials involving 783 patients were reviewed. The transumbilical g
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