Peptic UlcerPeptic Ulcer HemorrhageStomach UlcerDuodenal UlcerPeptic Ulcer PerforationLeg UlcerPressure UlcerSkin UlcerHelicobacter pyloriHelicobacter InfectionsAnti-Ulcer AgentsBuruli UlcerGastritisHemostasis, EndoscopicDyspepsiaOmeprazoleGastroscopyProton Pump InhibitorsHematemesisHistamine H2 AntagonistsCimetidineEndoscopy, GastrointestinalAnti-Inflammatory Agents, Non-SteroidalMelenaGastric AcidRanitidineGastric MucosaGastrointestinal HemorrhageGastric JuiceAmoxicillinStomachDuodenoscopyAntacidsClarithromycin2-PyridinylmethylsulfinylbenzimidazolesVagotomy, Proximal GastricVagotomyDiabetic FootEndoscopyMetronidazoleRecurrenceLansoprazoleGastroenterostomyDuodenitisGastrointestinal DiseasesStomach NeoplasmsPylorusBismuthElectrocoagulationMycobacterium ulceransDrug Therapy, CombinationGastrinsStomach DiseasesTreatment OutcomeEndoscopy, Digestive SystemFurazolidoneBandagesDuodenumAnti-Bacterial AgentsAntigens, BacterialUpper Gastrointestinal TractUreaseTinidazoleProspective StudiesRisk FactorsEsophagitisDumping SyndromePyloric AntrumGastric Outlet ObstructionPepsinogensTetragastrinGastric FistulaBreath TestsBacterial ProteinsGastrectomyZollinger-Ellison SyndromeTime FactorsGastric Acidity DeterminationFamotidineAcetic AcidPrevalenceEsophageal DiseasesDuodenal DiseasesEsomeprazoleOrganometallic CompoundsGastritis, AtrophicRabeprazoleBiopsyFollow-Up StudiesPolandAspirinCytotoxinsPentagastrinAge FactorsPostgastrectomy SyndromesIncidenceAntibodies, BacterialGastroenterologyCampylobacterPostoperative Complications