RanitidineOrganometallic CompoundsAntacidsAnti-Ulcer AgentsMetronidazoleSalicylatesAmoxicillinHelicobacter pyloriHelicobacter InfectionsClarithromycinHistamine H2 AntagonistsFurazolidoneDimercaprolTinidazoleDuodenal UlcerDrug Therapy, CombinationTetracyclineOmeprazoleGermaniumKlatskin's TumorAnti-Bacterial AgentsSucralfatePeptic UlcerDyspepsiaPenicillinsRadiation ProtectionHydrocarbons, IodinatedAntimonyGastric MucinsProton Pump InhibitorsThymolphthaleinHepatic Duct, CommonColloidsScintillation CountingBiliary Tract Surgical ProceduresGastritisBreath Tests2-PyridinylmethylsulfinylbenzimidazolesAntidiarrhealsCimetidineBile Ducts, IntrahepaticGastric MucosaAlpha ParticlesGastroscopyTooth DiscolorationResins, SyntheticSpectrophotometry, AtomicSulfoxidesAntitrichomonal AgentsErythromycin EthylsuccinateBile Duct NeoplasmsStomach UlcerSpectrometry, Mass, Fast Atom BombardmentElectrodesMyoclonusDrug CombinationsProsthesis ColoringCampylobacterLansoprazoleSilicatesMetals, HeavyMetalsCampylobacter InfectionsDuodenumIndiumCholangiocarcinomaNitroimidazolesRadiation-Protective AgentsTreatment OutcomeSalmonellaLevofloxacinUreaseStomach DiseasesBile DuctsSpectrum AnalysisMetallothioneinAnti-Infective AgentsUreaDental CementsDrug Resistance, MicrobialDouble-Blind MethodMagnetic Resonance SpectroscopyAnti-Infective Agents, LocalModels, MolecularAminosalicylic AcidsRadioisotopesGlycocalyxMercuryMicrobial Sensitivity TestsDrug Administration ScheduleOfloxacinHydrogen-Ion ConcentrationGastrinsElectrochemistryLeadPhantoms, ImagingTime FactorsRadiation DosageProspective StudiesSalicylic Acid