GastritisHelicobacter pyloriHelicobacter InfectionsHelicobacterGastritis, AtrophicStomachGastric MucosaStomach NeoplasmsPyloric AntrumUreaseStomach DiseasesHelicobacter heilmanniiStomach UlcerHelicobacter hepaticusPeptic UlcerGastroscopyMetaplasiaDyspepsiaPepsinogen AGastritis, HypertrophicAmoxicillinAnti-Ulcer AgentsClarithromycinOmeprazoleMetronidazoleBacterial ProteinsGastrinsAntigens, BacterialAchlorhydriaPepsinogen CBismuthParietal Cells, GastricBiopsyDuodenitisGastric JuiceBile RefluxAntibodies, BacterialEndoscopy, GastrointestinalPepsinogensGastric Acid2-PyridinylmethylsulfinylbenzimidazolesBreath TestsChronic DiseaseAnti-Bacterial AgentsLansoprazoleProton Pump InhibitorsHelicobacter felisGastric FundusPrecancerous ConditionsGerbillinaeAnemia, PerniciousPolymerase Chain ReactionDNA, BacterialCampylobacterDrug Therapy, CombinationDuodenal UlcerEndoscopyEndoscopy, Digestive SystemLymphoma, B-Cell, Marginal ZoneLewis Blood-Group SystemAntacidsTinidazoleAcinonyxGastric Acidity DeterminationMolecular Sequence DataGastric MucinsPostgastrectomy SyndromesRanitidineDuodenumGastrointestinal DiseasesH(+)-K(+)-Exchanging ATPaseUreaCytotoxinsAtrophyGastroesophageal RefluxGastrectomyImmunoglobulin GEsophagitisRNA, Ribosomal, 16SAdenocarcinomaDuodenogastric RefluxRabeprazoleGastrin-Secreting CellsEsophagitis, PepticEnzyme-Linked Immunosorbent AssayFurazolidonePrevalenceOrganometallic CompoundsVirulenceCardiaVirulence FactorsHelicobacter mustelaeImmunohistochemistryGenes, BacterialPeptic Ulcer HemorrhageInterleukin-8Campylobacter InfectionsAntitrichomonal AgentsBase SequencePenicillins