Helicobacter pyloriHelicobacter InfectionsGastritisGastric MucosaAmoxicillinClarithromycinAnti-Ulcer AgentsOmeprazoleDyspepsiaPeptic UlcerMetronidazoleUreaseDuodenal UlcerGastritis, AtrophicBreath TestsStomach NeoplasmsBismuthStomachDisease EradicationAnti-Bacterial AgentsDrug Therapy, CombinationStomach Ulcer2-PyridinylmethylsulfinylbenzimidazolesPyloric AntrumLansoprazoleStomach DiseasesGastroscopyTinidazoleProton Pump InhibitorsAntibodies, BacterialPepsinogen AMetaplasiaRanitidineFurazolidoneEndoscopy, GastrointestinalUreaPepsinogen CDuodenitisBiopsyAntitrichomonal AgentsBacterial ProteinsRabeprazoleGastrinsGastric AcidPoliomyelitisPenicillinsAntigens, BacterialAntacidsPeptic Ulcer HemorrhagePepsinogensTetracyclineLymphoma, B-Cell, Marginal ZoneSulfoxidesPrevalencePylorusGerbillinaeOrganometallic CompoundsSeroepidemiologic StudiesImmunoglobulin GEndoscopyEndoscopy, Digestive SystemGastroesophageal RefluxParietal Cells, GastricEnzyme-Linked Immunosorbent AssayTreatment OutcomeSensitivity and SpecificityGastric JuiceProspective StudiesGastrointestinal DiseasesBenzimidazolesEsophagitisEsophagitis, PepticAzure StainsAchlorhydriaHistamine H2 AntagonistsDuodenoscopySerologic TestsCase-Control StudiesAnti-Infective AgentsChronic DiseasePoliovirus Vaccine, OralRisk FactorsGastric Acidity DeterminationPolymerase Chain ReactionGastric MucinsLevofloxacinCardiaFecesLewis Blood-Group SystemPoliovirus VaccinesDracunculiasisPrecancerous ConditionsSmallpoxEsomeprazoleAnti-Inflammatory Agents, Non-SteroidalAnemia, Iron-DeficiencyOfloxacinHelicobacterWorld HealthHelicobacter felis