Duodenal UlcerHelicobacter pyloriHelicobacter InfectionsGastritisStomach UlcerGastric MucosaPeptic UlcerPeptic Ulcer PerforationPeptic Ulcer HemorrhageStomach NeoplasmsGastric JuiceVagotomy, Proximal GastricAnti-Ulcer AgentsCimetidineVagotomyGastric AcidRanitidineOmeprazoleGastrinsPylorusLeg UlcerAmoxicillinPressure UlcerDuodenoscopyStomachPyloric AntrumDuodenumSkin UlcerBismuthMetronidazoleClarithromycinDyspepsiaPentagastrinDumping SyndromeGastric Acidity DeterminationHistamine H2 AntagonistsUreaseDuodenitisPepsinogensGastroenterostomyGastroscopyStomach DiseasesAntacidsLansoprazoleDrug Therapy, Combination2-PyridinylmethylsulfinylbenzimidazolesSecretory RateRecurrenceCysteamineBuruli UlcerFamotidineDuodenal DiseasesAnti-Bacterial AgentsPepsin AZollinger-Ellison SyndromeBreath TestsSucralfateProton Pump InhibitorsFurazolidoneOrganometallic CompoundsBacterial ProteinsEndoscopy, GastrointestinalEndoscopyPenicillinsGastritis, AtrophicGefarnateGastrointestinal HemorrhageMetaplasiaEnprostilTinidazoleAnti-Inflammatory Agents, Non-SteroidalEndoscopy, Digestive SystemMagnesium HydroxideGastrointestinal DiseasesAntibodies, BacterialGastrectomyBiopsyGlycyrrhizaDrainageAcetic AcidSulfoxidesDouble-Blind MethodVagotomy, TruncalHistamine N-MethyltransferaseGuanidinesProspective StudiesPyloric StenosisPepsinogen AClinical Trials as TopicTime FactorsAtropa belladonnaFoodHematemesisFollow-Up StudiesHistamineLewis Blood-Group SystemUreaTetracyclineMelenaRabeprazole