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Forest plot for the comparison between ERFA plus stent and stent alone with respect to post-ERCP adverse events. (a) Pancreatitis. (b) Cholangitis. (c) Hemorrhage. (d) Cholecystitis. (e) All adverse events. ERFA, endoscopic radiofrequency ablation. ERCP, endoscopic retrograde cholangiopancreatography; SE, standard error; CI, confidence interval; IV, instrumental variable.
