Helicobacter pyloriHelicobacter InfectionsGastric AcidOmeprazoleAnti-Ulcer AgentsAmoxicillinClarithromycinGastric Mucosa2-PyridinylmethylsulfinylbenzimidazolesBismuthMetronidazoleDuodenal UlcerLansoprazolePentagastrinTinidazoleProton Pump InhibitorsGastrinsGastritisPeptic UlcerGastric JuiceRanitidineDrug Therapy, CombinationDyspepsiaAnti-Bacterial AgentsStomachRabeprazoleFurazolidoneAntacidsParietal Cells, GastricStomach UlcerHelicobacterHistamine H2 AntagonistsBreath TestsSulfoxidesAntitrichomonal AgentsUreaseStomach NeoplasmsBethanechol CompoundsPyloric AntrumGastroscopyPenicillinsGastric Acidity DeterminationAchlorhydriaBenzimidazolesHistamineSecretory RateGastritis, AtrophicLymphoma, B-Cell, Marginal ZoneCimetidinePeptonesEsophagitis, PepticGastroesophageal RefluxTetracyclineAminopyrineStomach DiseasesH(+)-K(+)-Exchanging ATPaseMetaplasiaVagotomyFamotidineUreaTreatment OutcomeEsomeprazoleEndoscopy, GastrointestinalMetiamideTetragastrinDuodenitisGastric FistulaOrganometallic CompoundsBacterial ProteinsLevofloxacinEsophagitisVagotomy, Proximal GastricNifuratelYogurtVagus NerveBethanecholProspective StudiesAnti-Infective AgentsOfloxacinDisease EradicationSomatostatinPylorusPepsinogen ADrug Administration ScheduleHydrogen-Ion ConcentrationAntigens, BacterialDanazolEndoscopyRifabutinGastric EmptyingEnterochromaffin-like CellsBenzoxepinsTreatment FailurePepsinogensDrug Resistance, BacterialTime FactorsDouble-Blind MethodAntibodies, BacterialHydrochloric AcidPurpura, Thrombocytopenic, Idiopathic