Helicobacter pyloriHelicobacter InfectionsGastric AcidOmeprazoleAnti-Ulcer AgentsAmoxicillinClarithromycinGastric Mucosa2-PyridinylmethylsulfinylbenzimidazolesBismuthMetronidazoleLansoprazoleDuodenal UlcerPentagastrinTinidazoleProton Pump InhibitorsGastrinsGastritisPeptic UlcerGastric JuiceRanitidineDyspepsiaDrug Therapy, CombinationAnti-Bacterial AgentsStomachRabeprazoleAntacidsFurazolidoneParietal Cells, GastricStomach UlcerHistamine H2 AntagonistsHelicobacterBreath TestsSulfoxidesAntitrichomonal AgentsUreaseGastroesophageal RefluxStomach NeoplasmsGastroscopyBethanechol CompoundsPyloric AntrumGastric Acidity DeterminationPenicillinsAchlorhydriaBenzimidazolesHistamineSecretory RateGastritis, AtrophicLymphoma, B-Cell, Marginal ZoneCimetidinePeptonesEsophagitis, PepticTetracyclineAminopyrineStomach DiseasesMetaplasiaH(+)-K(+)-Exchanging ATPaseVagotomyTreatment OutcomeFamotidineUreaEndoscopy, GastrointestinalEsomeprazoleEsophagitisMetiamideTetragastrinDuodenitisGastric FistulaOrganometallic CompoundsLevofloxacinBacterial ProteinsVagotomy, Proximal GastricNifuratelYogurtProspective StudiesVagus NerveBethanecholAnti-Infective AgentsDisease EradicationOfloxacinPylorusHydrogen-Ion ConcentrationSomatostatinDrug Administration SchedulePepsinogen AAntigens, BacterialEndoscopyGastric EmptyingDanazolRifabutinEnterochromaffin-like CellsTreatment FailureBenzoxepinsPepsinogensDrug Resistance, BacterialDouble-Blind MethodHydrochloric AcidAntibodies, BacterialPurpura, Thrombocytopenic, IdiopathicTime Factors