Effectiveness of a newly designed antireflux valve metal stent to reduce duodenobiliary reflux in patients with unresectable distal malignant biliary obstruction: a randomized, controlled pilot study (with videos)
Keywords: ARMS, antireflux metal stent; ARV, antireflux valve; ARVMS, antireflux valve metal stent; CI, confidence interval; cSEMS, covered self-expandable metal stent; ePTFE, e-polytetrafluoroethylene; MBO, malignant biliary obstruction; OR, odds ratio; SEMS, self