Bile Ducts, ExtrahepaticBile DuctsBile Duct NeoplasmsBileCholestasis, ExtrahepaticCommon Bile DuctBile Ducts, IntrahepaticBile Duct DiseasesHepatic Duct, CommonAdenoma, Bile DuctBiliary Tract NeoplasmsBile Acids and SaltsBiliary TractGallstonesCommon Bile Duct NeoplasmsCholangiographyBiliary Tract Surgical ProceduresBiliary AtresiaKlatskin's TumorCholestasisJaundice, ObstructiveCholangiopancreatography, Endoscopic RetrogradeCholangiocarcinomaCholangitisGallbladder NeoplasmsGallbladderCholecystectomyCholedochal CystCommon Bile Duct DiseasesJaundiceBiliary Tract DiseasesAmpulla of VaterCarcinomaSphincterotomy, EndoscopicPancreatic DuctsCholangitis, SclerosingCholedochostomyLiverDrainageJejunostomyAnastomosis, Roux-en-YCystic DuctEndosonographyKeratin-7HepatectomyCarcinoma, HepatocellularImmunohistochemistryCholelithiasisHepatic ArteryCholecystectomy, LaparoscopicLiver NeoplasmsAdenocarcinomaThoracic DuctLigationTomography, X-Ray ComputedCarcinoma, Squamous CellTreatment OutcomeCholangiopancreatography, Magnetic ResonanceCholedocholithiasisCholestasis, IntrahepaticRetrospective StudiesPortal VeinSpectroscopy, Near-InfraredSalivary DuctsPrognosisBile PigmentsBile CanaliculiSurvival Rate