Biliary Tract Surgical ProceduresBiliary Tract NeoplasmsBiliary Tract DiseasesBiliary TractGallbladder NeoplasmsSurgical Procedures, OperativeCholangiocarcinomaGallstonesBile Duct NeoplasmsCholelithiasisBile Ducts, ExtrahepaticCholecystectomyBile Ducts, IntrahepaticCholangitisGallbladderTreatment OutcomeAmpulla of VaterPostoperative ComplicationsBile DuctsRetrospective StudiesCommon Bile DuctCholedochostomyBileCholecystitisCholestasisCholangiopancreatography, Endoscopic RetrogradeCholangiographyBiliary FistulaSurgical Procedures, MinorTime FactorsBile Duct DiseasesDrainageCholestasis, Extrahepatic