CholelithiasisCholecystectomyClinical Trials as TopicCholecystitisGallbladderCholecystographyGallstonesCholecystectomy, LaparoscopicGallbladder DiseasesBileCholecystolithiasisCholedocholithiasisGallbladder NeoplasmsCystic DuctAnthracosilicosisTreatment OutcomeCholangiographyOpiumBiliary FistulaClinical Trials, Phase III as TopicTechnetium Tc 99m LidofeninBilirubinSitus InversusCholangiopancreatography, Endoscopic RetrogradeGilbert DiseaseClinical Trials, Phase II as TopicBiliary Tract DiseasesAnemia, Sickle CellClinical Trials, Phase I as TopicSomatotypesBile Acids and SaltsCholangitisBiliary TractCzechoslovakiaResearch DesignRetrospective StudiesCholangiopancreatography, Magnetic ResonanceControlled Clinical Trials as TopicDouble-Blind MethodPancreatitisProspective StudiesBile Duct DiseasesCommon Bile DuctBile Ducts, IntrahepaticIntestinal FistulaFollow-Up StudiesGlucuronosyltransferaseUrsodeoxycholic AcidTime FactorsCholesterolUltrasonographyCholestasis, ExtrahepaticCzech RepublicRandomized Controlled Trials as TopicRisk FactorsCholestasisPatient SelectionPostoperative ComplicationsSphincterotomy, EndoscopicBile DuctsMice, Inbred AKRMulticenter Studies as TopicLiver CirrhosisAcute DiseaseCase-Control StudiesPlacebosClinical Trials Data Monitoring CommitteesTracheostomybeta-ThalassemiaClinical Trials, Phase IV as TopicHyperparathyroidism, PrimarySex FactorsHelicobacterClinical ProtocolsChenodeoxycholic AcidNeoplasms