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 DiseasesEndoscopy, Digestive SystemFurazolidoneBandagesDuodenumTreatment OutcomeAnti-Bacterial AgentsAntigens, BacterialUpper Gastrointestinal TractUreaseTinidazoleEsophagitisDumping SyndromePyloric AntrumProspective StudiesRisk FactorsGastric Outlet ObstructionPepsinogensTetragastrinGastric FistulaBreath TestsBacterial ProteinsGastrectomyZollinger-Ellison SyndromeGastric Acidity DeterminationFamotidineAcetic AcidEsophageal DiseasesDuodenal DiseasesEsomeprazoleOrganometallic CompoundsTime FactorsPrevalenceGastritis, AtrophicRabeprazoleBiopsyPolandAspirinFollow-Up StudiesCytotoxinsPentagastrinAge FactorsPostgastrectomy SyndromesIncidenceGastroenterologyCampylobacterPostoperative ComplicationsTetracycline