Helicobacter pyloriHelicobacter InfectionsGastritisGastric MucosaAmoxicillinUreaseClarithromycinHelicobacterPeptic UlcerDyspepsiaAnti-Ulcer AgentsOmeprazoleMetronidazoleGastritis, AtrophicStomach NeoplasmsBreath TestsStomachDuodenal UlcerBismuthStomach DiseasesPyloric AntrumStomach Ulcer2-PyridinylmethylsulfinylbenzimidazolesGastroscopyAntibodies, BacterialAnti-Bacterial AgentsDrug Therapy, CombinationAntigens, BacterialProton Pump InhibitorsLansoprazoleBacterial ProteinsPepsinogen ATinidazoleMetaplasiaEndoscopy, GastrointestinalUreaRanitidineFurazolidoneBiopsyDuodenitisPepsinogen CRabeprazoleGastrinsPepsinogensGastric AcidAntitrichomonal AgentsGerbillinaeDisease EradicationLymphoma, B-Cell, Marginal ZonePenicillinsPeptic Ulcer HemorrhageTetracyclineImmunoglobulin GPrevalenceSulfoxidesSeroepidemiologic StudiesEndoscopy, Digestive SystemAntacidsParietal Cells, GastricEnzyme-Linked Immunosorbent AssayOrganometallic CompoundsGastroesophageal RefluxHelicobacter hepaticusHelicobacter heilmanniiSensitivity and SpecificityEndoscopyAzure StainsAchlorhydriaLewis Blood-Group SystemPolymerase Chain ReactionGastrointestinal DiseasesGastric MucinsGastric JuiceRisk FactorsBenzimidazolesProspective StudiesSerologic TestsDNA, BacterialEsophagitisChronic DiseaseGastric Acidity DeterminationCase-Control StudiesFecesTreatment OutcomeEsophagitis, PepticCardiaLevofloxacinPrecancerous ConditionsEsomeprazoleDrug Resistance, BacterialHistamine H2 AntagonistsVirulenceAnti-Infective AgentsDuodenoscopyEpithelial CellsHelicobacter felisAnti-Inflammatory Agents, Non-SteroidalMolecular Sequence DataBacterial AdhesionVirulence Factors