CholestasisCholestasis, IntrahepaticJaundice, NeonatalBiliary AtresiaCholestasis, ExtrahepaticBile Ducts, ExtrahepaticInfant, Newborn, DiseasesInfant, NewbornLiverBile DuctsBile Duct NeoplasmsCholagogues and CholereticsUrsodeoxycholic AcidBile Ducts, Intrahepatic1-NaphthylisothiocyanateBile Acids and SaltsBiliary TractBilirubinCholangiocarcinomaBileJaundice, ObstructiveBile CanaliculiHepatic Duct, CommonJaundiceLiver Function TestsCholangitisCommon Bile DuctLiver DiseasesPruritusLigationP-GlycoproteinsLiver NeoplasmsLiver Cirrhosis, BiliaryBiliary Tract NeoplasmsHypertension, PortalPortal VeinTaurochenodeoxycholic AcidKlatskin's TumorHepatocytesCholangiographyEthinyl EstradiolHepatitisAdenoma, Bile DuctPortoenterostomy, HepaticLithocholic AcidBiliary Tract DiseasesCholangiopancreatography, Endoscopic Retrograde