Biliary Tract DiseasesBiliary Tract NeoplasmsCholestasis, ExtrahepaticCholestasisBiliary TractCholelithiasisCholecystitisGallstonesCholangiopancreatography, Endoscopic RetrogradeCholecystectomyBileGallbladderJaundice, ObstructivePancreatitisBiliary Tract Surgical ProceduresCholangitisCholedochostomyCommon Bile DuctBile Duct NeoplasmsIntestinal ObstructionAirway ObstructionDrainageGallbladder NeoplasmsLiver DiseasesHepatic Duct, CommonBile Ducts, ExtrahepaticCholangiocarcinomaRespiratory Tract DiseasesJaundiceCholangiographyAcute DiseaseBile DuctsUreteral ObstructionCommon Bile Duct DiseasesBile Ducts, IntrahepaticAmpulla of VaterCholestasis, IntrahepaticUrologic DiseasesPalliative CareRespiratory Tract InfectionsImino AcidsPlasticsTechnetium Tc 99m LidofeninBiliary FistulaBilirubinCommon Bile Duct NeoplasmsDigestive System NeoplasmsStentsKlatskin's TumorBiliary AtresiaRespiratory Syncytial Virus InfectionsBile Duct DiseasesDigestive System DiseasesCholangiopancreatography, Magnetic ResonancePancreatic NeoplasmsDuodenal ObstructionSphincterotomy, TranshepaticConstriction, PathologicRespiratory Syncytial Virus, HumanLiverRespiratory Syncytial VirusesPostoperative ComplicationsHemobiliaRetrospective StudiesPancreatic DiseasesUrethral ObstructionUrinary TractUrinary Bladder Neck ObstructionBocavirusSphincterotomy, EndoscopicDuodenoscopyNasal ObstructionLigationAnastomosis, Roux-en-YMetapneumovirusGastric Outlet ObstructionAdenoma, Bile DuctTreatment OutcomeLiver Function TestsGastrointestinal DiseasesVentricular Outflow Obstruction