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Efficacy outcomes. (a) Overall clinical improvement, (b) number of endoscopic sessions, (c) percutaneous drainage placement, (d) surgical intervention, and (e) mortality. BFMS, biflanged metal stents; CI, confidence interval; IV, inverse-variance; LAMS, lumen-apposing metal stents; M-H, Mantel-Haenszel; PS, plastic stents.
