BerberineHelicobacter pyloriHelicobacter InfectionsGastritisGastric MucosaBerberine AlkaloidsUreaseDyspepsiaPeptic UlcerAmoxicillinGastritis, AtrophicClarithromycinStomach NeoplasmsAnti-Ulcer AgentsOmeprazoleStomachBreath TestsDuodenal UlcerMetronidazolePyloric AntrumStomach DiseasesStomach UlcerAntibodies, BacterialBismuthGastroscopyPepsinogen AMetaplasiaCoptisAnti-Bacterial AgentsDrug Therapy, CombinationPepsinogen CEndoscopy, GastrointestinalLansoprazoleProton Pump InhibitorsUreaBacterial ProteinsTinidazoleBiopsy2-PyridinylmethylsulfinylbenzimidazolesDuodenitisRanitidineGastrinsAntigens, BacterialPepsinogensFurazolidonePylorusGastric AcidPeptic Ulcer HemorrhagePrevalenceHydrastisGerbillinaeAntitrichomonal AgentsSeroepidemiologic StudiesImmunoglobulin GEndoscopy, Digestive SystemEnzyme-Linked Immunosorbent AssayLymphoma, B-Cell, Marginal ZoneParietal Cells, GastricEndoscopyTetracyclineSensitivity and SpecificityRabeprazoleAzure StainsGastroesophageal RefluxPenicillinsAntacidsGastric JuiceGastrointestinal DiseasesOrganometallic CompoundsGastric MucinsSulfoxidesCase-Control StudiesCardiaAchlorhydriaLewis Blood-Group SystemDuodenoscopySerologic TestsEsophagitis, PepticRisk FactorsPolymerase Chain ReactionGastric Acidity DeterminationEsophagitisChronic DiseaseProspective StudiesFecesPrecancerous ConditionsBenzimidazolesHelicobacter felisEpithelial CellsHelicobacterAnti-Inflammatory Agents, Non-SteroidalCampylobacterAnemia, Iron-DeficiencyDuodenum