Helicobacter pyloriDuodenal UlcerStomach UlcerPeptic UlcerHelicobacter InfectionsLeg UlcerPressure UlcerSkin UlcerPeptic Ulcer HemorrhageGastritisGastric MucosaPeptic Ulcer PerforationUreaseAnti-Ulcer AgentsPylorusStomachBuruli UlcerDyspepsiaClarithromycinAmoxicillinOmeprazoleMetronidazoleStomach NeoplasmsGastroscopyBacterial ProteinsBismuthGastritis, AtrophicPyloric AntrumStomach DiseasesAnti-Bacterial AgentsBreath TestsRanitidineGastric AcidProton Pump InhibitorsLansoprazoleGastric JuiceAntibodies, BacterialDiabetic FootDrug Therapy, CombinationGastrinsDuodenitisBiopsyAntacidsCimetidineTinidazolePepsinogen APepsinogensMycobacterium ulceransLewis Blood-Group SystemHistamine H2 AntagonistsFurazolidoneMetaplasiaDuodenoscopyDuodenumBandagesUreaGerbillinaeAnti-Inflammatory Agents, Non-SteroidalEndoscopyOrganometallic CompoundsEndoscopy, GastrointestinalHelicobacterCampylobacterVagotomy, Proximal GastricGastrointestinal DiseasesVagotomyDNA, BacterialPolymerase Chain ReactionRecurrenceTetracyclineGastric Acidity DeterminationPepsinogen CProspective StudiesTreatment OutcomePrevalencePenicillinsCytotoxinsAcetic AcidAntitrichomonal AgentsImmunoglobulin GLymphoma, B-Cell, Marginal ZoneGastric MucinsMolecular Sequence DataBacterial AdhesionVirulenceFamotidineGastrointestinal HemorrhageEnzyme-Linked Immunosorbent AssayGastroesophageal RefluxSulfoxidesAchlorhydriaParietal Cells, GastricSensitivity and SpecificitySeroepidemiologic StudiesTime FactorsVirulence FactorsEsophageal DiseasesAzure StainsGenes, BacterialFollow-Up Studies