Peptic UlcerPeptic Ulcer HemorrhagePeptic Ulcer PerforationStomach UlcerDuodenal UlcerHelicobacter pyloriHelicobacter InfectionsLeg UlcerPressure UlcerSkin UlcerAnti-Ulcer AgentsGastritisHemostasis, EndoscopicDyspepsiaOmeprazoleProton Pump InhibitorsGastroscopyEndoscopy, GastrointestinalHematemesisGastric MucosaHistamine H2 AntagonistsMelenaBuruli UlcerAnti-Inflammatory Agents, Non-SteroidalGastrointestinal HemorrhageCimetidineAmoxicillinGastric AcidRanitidineAntacids2-PyridinylmethylsulfinylbenzimidazolesClarithromycinStomachEndoscopyGastrointestinal DiseasesDuodenoscopyGastric JuiceMetronidazoleRecurrenceLansoprazoleVagotomyDuodenitisStomach NeoplasmsVagotomy, Proximal GastricGastroenterostomyTreatment OutcomeElectrocoagulationStomach DiseasesEndoscopy, Digestive SystemDrug Therapy, CombinationBismuthProspective StudiesRisk FactorsPylorusEsophagitisFurazolidonePyloric AntrumPrevalenceAntigens, BacterialAnti-Bacterial AgentsUpper Gastrointestinal TractTinidazoleGastrinsTime FactorsUreaseDuodenumGastrectomyDiabetic FootBreath TestsGastric Outlet ObstructionFollow-Up StudiesTetragastrinGastric FistulaBacterial ProteinsAge FactorsSeverity of Illness IndexEsomeprazoleSymptom AssessmentAspirinGastroesophageal RefluxQuestionnairesDumping SyndromeDepressionZollinger-Ellison SyndromePolandPepsinogensRetrospective StudiesBiopsyDuodenal DiseasesSex FactorsRabeprazoleGastritis, AtrophicIncidenceGastric Acidity DeterminationCytotoxinsMycobacterium ulceransSmokingEsophageal DiseasesOrganometallic CompoundsGastroenterology