Helicobacter pyloriHelicobacter InfectionsHelicobacterGastritisGastric MucosaUreasePeptic UlcerClarithromycinMetronidazoleStomachAmoxicillinSpiral GanglionDyspepsiaAnti-Ulcer AgentsBacterial ProteinsOmeprazoleStomach NeoplasmsTomography, Spiral ComputedStomach DiseasesGastritis, AtrophicBismuthPyloric AntrumAntigens, BacterialDuodenal UlcerBreath TestsStomach UlcerAnti-Bacterial AgentsHelicobacter hepaticusGastroscopyAntibodies, BacterialHelicobacter heilmanniiLansoprazole2-PyridinylmethylsulfinylbenzimidazolesProton Pump InhibitorsDrug Therapy, CombinationTinidazoleLewis Blood-Group SystemMetaplasiaPepsinogen ABiopsyGerbillinaeRanitidineUreaDNA, BacterialEndoscopy, GastrointestinalDuodenitisFurazolidoneSpiral Ligament of CochleaPolymerase Chain ReactionCytotoxinsMolecular Sequence DataGastrinsGastric AcidLymphoma, B-Cell, Marginal ZonePepsinogensAntacidsTetracyclinePepsinogen CAntitrichomonal AgentsPylorusNitroreductasesPenicillinsRabeprazoleImmunoglobulin GGenes, BacterialVirulenceBacterial AdhesionVirulence FactorsGastric MucinsGastric JuiceOrganometallic CompoundsSensitivity and SpecificitySulfoxidesEndoscopy, Digestive SystemEnzyme-Linked Immunosorbent AssayGastrointestinal DiseasesAntigens, CD15Seroepidemiologic StudiesAchlorhydriaParietal Cells, GastricAdhesins, BacterialPrevalenceMicrobial Sensitivity TestsGastroesophageal RefluxGenomic IslandsPeptic Ulcer HemorrhageGene Expression Regulation, BacterialEpithelial CellsInterleukin-8CampylobacterDrug Resistance, BacterialRNA, Ribosomal, 23SAzure StainsBase SequenceGenome, BacterialFecesEndoscopyChronic DiseaseColony Count, MicrobialSerologic Tests