Helicobacter pyloriHelicobacter InfectionsGastric AcidOmeprazoleAnti-Ulcer AgentsAmoxicillinClarithromycinGastric Mucosa2-PyridinylmethylsulfinylbenzimidazolesMetronidazoleGastritisBismuthDuodenal UlcerHelicobacterLansoprazolePeptic UlcerTinidazoleDyspepsiaProton Pump InhibitorsPentagastrinGastrinsDrug Therapy, CombinationRanitidineGastric JuiceStomachAnti-Bacterial AgentsUreaseStomach UlcerRabeprazoleFurazolidoneBreath TestsAntacidsParietal Cells, GastricStomach NeoplasmsHistamine H2 AntagonistsSulfoxidesPyloric AntrumAntitrichomonal AgentsGastroscopyGastritis, AtrophicPenicillinsStomach DiseasesAchlorhydriaBacterial ProteinsGastric Acidity DeterminationBenzimidazolesBethanechol CompoundsLymphoma, B-Cell, Marginal ZoneMetaplasiaHistamineSecretory RateTetracyclineUreaGastroesophageal RefluxEsophagitis, PepticEndoscopy, GastrointestinalCimetidineDuodenitisAntigens, BacterialPeptonesH(+)-K(+)-Exchanging ATPaseAminopyrineTreatment OutcomeEsomeprazoleFamotidineOrganometallic CompoundsVagotomyHelicobacter hepaticusPepsinogen AAntibodies, BacterialEsophagitisLevofloxacinMetiamideTetragastrinPylorusHelicobacter heilmanniiProspective StudiesGastric FistulaAnti-Infective AgentsYogurtNifuratelPepsinogensVagotomy, Proximal GastricOfloxacinBiopsyHydrogen-Ion ConcentrationEndoscopyDisease EradicationVagus NerveLewis Blood-Group SystemDrug Resistance, BacterialBethanecholDrug Administration ScheduleRifabutinSomatostatinDNA, BacterialGerbillinaeTreatment FailureGastric EmptyingDanazol