Helicobacter pyloriRanitidineGastric AcidHelicobacter InfectionsAnti-Ulcer AgentsOmeprazoleAmoxicillinClarithromycinBismuthGastric Mucosa2-PyridinylmethylsulfinylbenzimidazolesDuodenal UlcerMetronidazoleLansoprazoleTinidazolePentagastrinHistamine H2 AntagonistsProton Pump InhibitorsGastrinsPeptic UlcerGastric JuiceGastritisDrug Therapy, CombinationDyspepsiaAnti-Bacterial AgentsAntacidsStomachStomach UlcerRabeprazoleFurazolidoneParietal Cells, GastricHelicobacterBreath TestsSulfoxidesCimetidineGastric Acidity DeterminationAntitrichomonal AgentsUreaseFamotidineStomach NeoplasmsBethanechol CompoundsPenicillinsPyloric AntrumGastroscopyHistamineBenzimidazolesAchlorhydriaSecretory RateGastritis, AtrophicLymphoma, B-Cell, Marginal ZoneEsophagitis, PepticGastroesophageal RefluxPeptonesTetracyclineAminopyrineStomach DiseasesH(+)-K(+)-Exchanging ATPaseMetaplasiaTreatment OutcomeVagotomyUreaEsomeprazoleEndoscopy, GastrointestinalOrganometallic CompoundsEsophagitisMetiamideTetragastrinDuodenitisGastric FistulaLevofloxacinBacterial ProteinsVagotomy, Proximal GastricNifuratelYogurtProspective StudiesVagus NerveBethanecholAnti-Infective AgentsDrug Administration ScheduleDouble-Blind MethodSucralfateHydrogen-Ion ConcentrationDisease EradicationOfloxacinPylorusSomatostatinPepsinogen AEndoscopyGastric EmptyingAntigens, BacterialFuransHistamine AntagonistsDanazolPepsinogensTreatment FailureRifabutinEnterochromaffin-like CellsBenzoxepinsDrug Resistance, BacterialTime Factors