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 AntrumGastroscopyPenicillinsAchlorhydriaGastric Acidity DeterminationBenzimidazolesHistamineSecretory RateGastritis, AtrophicLymphoma, B-Cell, Marginal ZoneCimetidinePeptonesEsophagitis, PepticGastroesophageal RefluxTetracyclineAminopyrineStomach DiseasesH(+)-K(+)-Exchanging ATPaseMetaplasiaVagotomyFamotidineUreaTreatment OutcomeEsomeprazoleEndoscopy, GastrointestinalMetiamideTetragastrinDuodenitisGastric FistulaOrganometallic CompoundsLevofloxacinBacterial ProteinsEsophagitisVagotomy, Proximal GastricNifuratelYogurtVagus NerveBethanecholProspective StudiesAnti-Infective AgentsDisease EradicationOfloxacinPylorusSomatostatinPepsinogen ADrug Administration ScheduleAntigens, BacterialHydrogen-Ion ConcentrationDanazolEndoscopyRifabutinEnterochromaffin-like CellsGastric EmptyingBenzoxepinsTreatment FailurePepsinogensDrug Resistance, BacterialDouble-Blind MethodAntibodies, BacterialPurpura, Thrombocytopenic, IdiopathicHydrochloric AcidAzithromycin