GastritisGastritis, AtrophicStomach UlcerDuodenal UlcerPeptic UlcerHelicobacter pyloriHelicobacter InfectionsGastric MucosaLeg UlcerPressure UlcerSkin UlcerPeptic Ulcer HemorrhagePyloric AntrumStomachGastroscopyGastritis, HypertrophicMetaplasiaPeptic Ulcer PerforationPepsinogen AStomach NeoplasmsBuruli UlcerAchlorhydriaGastrinsBile RefluxAnti-Ulcer AgentsGastric JuiceDyspepsiaPepsinogen CDuodenitisStomach DiseasesParietal Cells, GastricHelicobacter heilmanniiAnemia, PerniciousHelicobacter felisGastric AcidPepsinogensBiopsyChronic DiseaseUreaseOmeprazoleHelicobacterPostgastrectomy SyndromesEndoscopyAmoxicillinDiabetic FootPrecancerous ConditionsGastroenterostomyEndoscopy, GastrointestinalCampylobacterBismuthAntigens, BacterialAtrophyGastric Acidity DeterminationCimetidineAntacidsAcinonyxAntibodies, BacterialVagotomyAutoimmune DiseasesH(+)-K(+)-Exchanging ATPaseDuodenumMycobacterium ulceransDuodenogastric RefluxRanitidineDuodenoscopyClarithromycinGastric FundusProton Pump InhibitorsGastrointestinal DiseasesVagotomy, Proximal GastricGastrointestinal Hemorrhage2-PyridinylmethylsulfinylbenzimidazolesPylorusLansoprazoleBacterial ProteinsBandagesEndoscopy, Digestive SystemMetronidazoleTropaeolaceaeImmunoglobulin GIntrinsic FactorAnti-Inflammatory Agents, Non-SteroidalHistamine H2 AntagonistsProspective StudiesDuodenal DiseasesDrug Therapy, CombinationThymectomyPrevalenceCampylobacter InfectionsGastroesophageal RefluxStereoisomerismImmunohistochemistryRisk FactorsEnzyme-Linked Immunosorbent AssayPolymerase Chain ReactionEsophagitisFamotidineAnti-Bacterial AgentsTreatment OutcomeFollow-Up Studies