Research Article
Factors Associated with the Technical Success of Bilateral Endoscopic Metallic Stenting with Partial Stent-In-Stent Placement in Patients with Malignant Hilar Biliary Obstruction
Figure 1
Flowchart of the study population selection and matching by propensity score. MHBO: malignant hilar biliary obstruction; SEMS: self-expandable metallic stent; PSIS: partial stent-in-stent; EST: endoscopic sphincterotomy.