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OBJECTIVE
The aim of this study was to assess the efficacy and safety following endoscopic management of Zenker’s diverticulum (ZD) using a needle‐knife technique.
METHODS
A systematic search of PubMed, Embase and Cochrane library databases was performed. All original studies reporting efficacy and safety of needle‐knife technique for treatment of ZD were included. Pooled event rates across studies...
OBJECTIVE: To evaluate comprehensively the association of cytotoxic T‐lymphocyte antigen 4 (CTLA‐4) +49A/G polymorphism with susceptibility to primary biliary cirrhosis (PBC).
METHODS: PubMed was used to search for the relevant published articles. The risk of PBC association with the CTLA‐4+49A/G polymorphism was estimated for each study in a random‐effects model. Odds ratio (OR) and 95% confidence...
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