Meta-analysis of efficacy of self-expandable metal stents in management of benign biliary strictures and comparison with multiple plastic stents: sample search query for Medline: May 26, 2016

("Bile Ducts"[Mesh] OR "Common Bile Duct Diseases"[Mesh] OR biliary) AND ("Constriction, Pathologic"[Mesh] OR strict* OR constrict*) AND benign* AND ("Stents"[Mesh] AND (metal OR metallic OR metals OR self-expandable metal stents OR covered metal stents) AND (“ERCP”[Mesh] AND (endoscopic OR endoscopic retrograde cholangiopancreatography) AND “Case-Control Studies”[Mesh:noexp] OR "retrospective studies"[mesh:noexp] OR “Control Groups”[Mesh:noexp] OR (case[TIAB] AND control[TIAB]) OR (cases[TIAB] AND controls [TIAB]) OR (cases[TIAB] AND controlled[TIAB]) OR (case[TIAB] AND comparison*[TIAB]) OR (cases[TIAB] AND comparison* [TIAB]) OR “control group”[TIAB] OR “control groups” OR ("Bile Ducts"[Mesh] OR "Common Bile Duct Diseases"[Mesh] OR biliary) AND ("Constriction, Pathologic"[Mesh] OR strict* OR constrict*) AND benign* AND ("Stents"[Mesh] AND (metal OR metallic OR metals OR self-expandable metal stents OR covered metal stents) AND (“ERCP”[Mesh] AND (endoscopic OR endoscopic retrograde cholangiopancreatography) AND "Clinical Trial"[PT:noexp] OR "clinical trial, phase i"[pt] OR "clinical trial, phase ii"[pt] OR "clinical trial, phase iii"[pt] OR "clinical trial, phase iv"[pt] OR "controlled clinical trial"[pt] OR "multicenter study"[pt] OR "randomized controlled trial"[pt] OR "Clinical Trials as Topic"[mesh:noexp] OR "clinical trials, phase i as topic"[MeSH Terms:noexp] OR "clinical trials, phase ii as topic"[MeSH Terms:noexp] OR "clinical trials, phase iii as topic"[MeSH Terms:noexp] OR "clinical trials, phase iv as topic"[MeSH Terms:noexp] OR "controlled clinical trials as topic"[MeSH Terms:noexp] OR "randomized controlled trials as topic"[MeSH Terms:noexp] OR "early termination of clinical trials"[MeSH Terms:noexp] OR "multicenter studies as topic"[MeSH Terms: noexp] OR "Double-Blind Method"[Mesh] OR ((randomised [TIAB] OR randomized[TIAB]) AND (trial[TIAB] OR trials[tiab])) OR ((single[TIAB] OR double[TIAB] OR doubled[TIAB] OR triple [TIAB] OR tripled[TIAB] OR treble[TIAB] OR treble[TIAB]) AND (blind*[TIAB] OR mask*[TIAB])) OR ("4 arm"[tiab] OR "four arm"[tiab])