Peptic UlcerPeptic Ulcer HemorrhagePeptic Ulcer PerforationStomach UlcerDuodenal UlcerHelicobacter pyloriHelicobacter InfectionsLeg UlcerDNA DamagePressure UlcerSkin UlcerAnti-Ulcer AgentsGastritisHemostasis, EndoscopicDyspepsiaOmeprazoleProton Pump InhibitorsGastroscopyEndoscopy, GastrointestinalHematemesisGastric MucosaMelenaHistamine H2 AntagonistsBuruli UlcerAnti-Inflammatory Agents, Non-SteroidalGastrointestinal HemorrhageCimetidineAmoxicillinGastric AcidRanitidineClarithromycin2-PyridinylmethylsulfinylbenzimidazolesAntacidsStomachGastric JuiceDuodenoscopyEndoscopyMetronidazoleLansoprazoleVagotomyGastrointestinal DiseasesDuodenitisRecurrenceVagotomy, Proximal GastricStomach NeoplasmsGastroenterostomyElectrocoagulationStomach DiseasesEndoscopy, Digestive SystemBismuthDrug Therapy, CombinationPylorusFurazolidoneEsophagitisPyloric AntrumAntigens, BacterialAnti-Bacterial AgentsTinidazoleUpper Gastrointestinal TractGastrinsTreatment OutcomeUreaseDuodenumDiabetic FootGastrectomyGastric Outlet ObstructionBacterial ProteinsRisk FactorsTime FactorsTetragastrinBreath TestsGastric FistulaProspective StudiesAspirinPepsinogensZollinger-Ellison SyndromeEsomeprazoleDumping SyndromePolandCytotoxinsGastritis, AtrophicDuodenal DiseasesBiopsyOrganometallic CompoundsMycobacterium ulceransRabeprazolePrevalenceAge FactorsGastric Acidity DeterminationFamotidineBandagesPostgastrectomy SyndromesEsophageal DiseasesGastroenterologyCampylobacterSmokingIncidenceDNA RepairTetracyclineAntitrichomonal Agents