Biliary Tract Surgical ProceduresBiliary Tract NeoplasmsBiliary Tract DiseasesBiliary TractGallbladder NeoplasmsSurgical Procedures, OperativeCholangiocarcinomaGallstonesBile Duct NeoplasmsCholelithiasisBile Ducts, ExtrahepaticCholecystectomyBile Ducts, IntrahepaticCholangitisGallbladderAmpulla of VaterTreatment OutcomeBile DuctsPostoperative ComplicationsCommon Bile DuctCholedochostomyBileRetrospective StudiesCholecystitisCholestasisCholangiopancreatography, Endoscopic RetrogradeCholangiographyBiliary FistulaSurgical Procedures, MinorPrimary PreventionTime FactorsBile Duct DiseasesDrainage