Breath TestsHelicobacter InfectionsHelicobacter pyloriUreaGastric EmptyingCarbon IsotopesLactuloseAminopyrineCaprylatesHydrogenLactose IntoleranceAnti-Ulcer AgentsExhalationDyspepsiaOmeprazoleCarbon RadioisotopesClarithromycinAmoxicillin2-PyridinylmethylsulfinylbenzimidazolesCarbon DioxideBismuthUreaseGastrointestinal TransitResearch PersonnelTinidazoleMetronidazoleChylomicron RemnantsLactose Tolerance TestLansoprazoleMalabsorption SyndromesLiver Function TestsFalse Negative ReactionsSensitivity and SpecificitySulfoxidesPeptic UlcerAcetamidesDuodenal UlcerDrug Therapy, CombinationGastroparesisFurazolidoneAnti-Bacterial AgentsIntestine, SmallBlind Loop SyndromeRanitidineRabeprazoleIleocecal ValveReproducibility of ResultsLactoseSpectrophotometry, InfraredProton Pump InhibitorsGastroscopyStomachAntitrichomonal AgentsPentanesBreath HoldingMineral WatersSpirulinaLoperamideBiomedical ResearchExocrine Pancreatic InsufficiencyIrritable Bowel SyndromeGastritisMethaneEndoscopy, GastrointestinalSteatorrheaFecesDihydropyrimidine Dehydrogenase DeficiencyPhenolsulfonphthaleinPancreatinGastrointestinal MotilityPropanthelineRespirationFlatulenceTime FactorsGlutethimideDiphenoxylateMucositisProspective StudiesIntestinal DiseasesGastrointestinal AgentsLiver CirrhosisAchlorhydriaRespiratory MechanicsBenzimidazolesTrioleinAntacidsPancreatic ExtractsIntestinal AbsorptionVolatile Organic CompoundsPredictive Value of TestsAcetic AcidBiliopancreatic DiversionTreatment OutcomeEsomeprazoleSprue, TropicalTidal VolumeResearchEthics, ResearchErythromycinMouth