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, SyntheticAntitrichomonal AgentsErythromycin EthylsuccinateBile Duct NeoplasmsStomach UlcerSulfoxidesSpectrophotometry, AtomicElectrodesMyoclonusDrug CombinationsProsthesis ColoringCampylobacterLansoprazoleSilicatesMetals, HeavyCampylobacter InfectionsDuodenumIndiumCholangiocarcinomaNitroimidazolesRadiation-Protective AgentsTreatment OutcomeSalmonellaLevofloxacinUreaseStomach DiseasesBile DuctsAnti-Infective AgentsDental CementsDrug Resistance, MicrobialDouble-Blind MethodMetalsAnti-Infective Agents, LocalMetallothioneinUreaAminosalicylic AcidsGlycocalyxDrug Administration ScheduleRadioisotopesOfloxacinMicrobial Sensitivity TestsGastrinsLeadMercuryPhantoms, ImagingProspective StudiesSalicylic AcidDiarrhea, InfantileRadiation DosageBrain DiseasesMetal NanoparticlesTime FactorsDiarrheaMicroscopy, Electron, TransmissionColony Count, Microbial