RanitidineOrganometallic CompoundsAntacidsAnti-Ulcer AgentsMetronidazoleSalicylatesAmoxicillinHelicobacter pyloriHelicobacter InfectionsClarithromycinHistamine H2 AntagonistsFurazolidoneDimercaprolTinidazoleDuodenal UlcerDrug Therapy, CombinationTetracyclineOmeprazoleGermaniumAnti-Bacterial AgentsKlatskin's TumorSucralfatePeptic UlcerDyspepsiaPenicillinsRadiation ProtectionHydrocarbons, IodinatedAntimonyGastric MucinsProton Pump InhibitorsThymolphthaleinHepatic Duct, CommonColloidsScintillation CountingGastritisBreath TestsBiliary Tract Surgical ProceduresAntidiarrheals2-PyridinylmethylsulfinylbenzimidazolesCimetidineGastric MucosaBile Ducts, IntrahepaticAlpha ParticlesGastroscopyTooth DiscolorationResins, SyntheticSpectrophotometry, AtomicSulfoxidesStomach UlcerBile Duct NeoplasmsAntitrichomonal AgentsErythromycin EthylsuccinateElectrodesMyoclonusDrug CombinationsProsthesis ColoringMetals, HeavySilicatesModels, ChemicalCampylobacterLansoprazoleMagnetic Resonance SpectroscopyChemical PhenomenaMetalsCampylobacter InfectionsSalmonellaDuodenumIndiumRadiation-Protective AgentsTreatment OutcomeNitroimidazolesCholangiocarcinomaAnti-Infective AgentsMultiple Chemical SensitivityUreaUreaseBile DuctsLevofloxacinStomach DiseasesAnti-Infective Agents, LocalTime FactorsDrug Resistance, MicrobialDental CementsChemical IndustryMetallothioneinDouble-Blind MethodMicrobial Sensitivity TestsAminosalicylic AcidsRadioisotopesChemical WarfareGlycocalyxLeadMercuryDrug Administration ScheduleOrganic ChemicalsOfloxacinHazardous SubstancesInorganic ChemicalsGastrinsBurns, Chemical