Helicobacter pyloriHelicobacter InfectionsGastric AcidAnti-Ulcer AgentsOmeprazoleAmoxicillinStomach UlcerClarithromycinGastric MucosaDuodenal Ulcer2-PyridinylmethylsulfinylbenzimidazolesBismuthPeptic UlcerMetronidazoleLansoprazolePentagastrinTinidazoleProton Pump InhibitorsGastritisGastrinsGastric JuiceRanitidineDyspepsiaDrug Therapy, CombinationAnti-Bacterial AgentsStomachRabeprazoleAntacidsHistamine H2 AntagonistsFurazolidoneHelicobacterParietal Cells, GastricBreath TestsSulfoxidesGastroscopyStomach NeoplasmsAntitrichomonal AgentsUreasePyloric AntrumCimetidineBethanechol CompoundsGastric Acidity DeterminationPenicillinsAchlorhydriaBenzimidazolesGastritis, AtrophicHistamineSecretory RateLymphoma, B-Cell, Marginal ZoneStomach DiseasesVagotomyFamotidinePeptonesEsophagitis, PepticGastroesophageal RefluxMetaplasiaPeptic Ulcer HemorrhageTetracyclineAminopyrineH(+)-K(+)-Exchanging ATPaseEndoscopy, GastrointestinalTreatment OutcomeUreaEsomeprazoleGastric FistulaDuodenitisTetragastrinOrganometallic CompoundsMetiamideVagotomy, Proximal GastricPylorusBacterial ProteinsLevofloxacinEsophagitisNifuratelProspective StudiesYogurtVagus NerveBethanecholAnti-Infective AgentsEndoscopySomatostatinAntigens, BacterialOfloxacinDisease EradicationDrug Administration ScheduleGastric EmptyingPepsinogen AHydrogen-Ion ConcentrationHydrochloric AcidPepsinogensDanazolDouble-Blind MethodRifabutinEnterochromaffin-like CellsDuodenumTreatment FailureBenzoxepinsTime FactorsDrug Resistance, Bacterial