Peptic UlcerPeptic Ulcer HemorrhagePeptic Ulcer PerforationStomach UlcerDuodenal UlcerHelicobacter pyloriHelicobacter InfectionsLeg UlcerPressure UlcerSkin UlcerAnti-Ulcer AgentsGastritisHemostasis, EndoscopicDyspepsiaOmeprazoleProton Pump InhibitorsGastroscopyEndoscopy, GastrointestinalHematemesisGastric MucosaMelenaHistamine H2 AntagonistsBuruli UlcerAnti-Inflammatory Agents, Non-SteroidalGastrointestinal HemorrhageCimetidineAmoxicillinRanitidineGastric AcidClarithromycinAntacids2-PyridinylmethylsulfinylbenzimidazolesStomachGastric JuiceDuodenoscopyEndoscopyMetronidazoleLansoprazoleRecurrenceGastrointestinal DiseasesVagotomyDuodenitisVagotomy, Proximal GastricStomach NeoplasmsGastroenterostomyElectrocoagulationStomach DiseasesEndoscopy, Digestive SystemDrug Therapy, CombinationBismuthPylorusFurazolidoneTreatment OutcomeEsophagitisAntigens, BacterialPyloric AntrumTinidazoleUpper Gastrointestinal TractGastrinsAnti-Bacterial AgentsUreaseDiabetic FootGastrectomyDuodenumGastric Outlet ObstructionRisk FactorsTetragastrinGastric FistulaBreath TestsBacterial ProteinsProspective StudiesAspirinPepsinogensZollinger-Ellison SyndromeEsomeprazoleDumping SyndromePolandGastritis, AtrophicTime FactorsDuodenal DiseasesMycobacterium ulceransRabeprazolePrevalenceCytotoxinsBiopsyOrganometallic CompoundsGastric Acidity DeterminationBandagesFollow-Up StudiesAge FactorsFamotidinePostgastrectomy SyndromesGastroenterologyCampylobacterEsophageal DiseasesIncidenceTetracyclinePostoperative ComplicationsRetrospective StudiesAntitrichomonal Agents