Gastroesophageal RefluxStomachBile RefluxEsophagusEsophagitis, PepticEsophageal pH MonitoringManometryDuodenogastric RefluxHeartburnGastric Acidity DeterminationEsophagogastric JunctionEsophagitisEsophagoscopyVesico-Ureteral RefluxEructationGastric AcidPeristalsisBarrett EsophagusLaryngopharyngeal RefluxSilicic AcidAntacidsHydrogen-Ion ConcentrationMorning SicknessProton Pump InhibitorsStomach NeoplasmsHernia, HiatalOmeprazoleMonitoring, PhysiologicProlapseAnti-Ulcer AgentsFundoplicationGastroscopyNizatidineMonitoring, AmbulatoryAluminum HydroxideEsophageal DiseasesEsophageal Motility Disorders2-PyridinylmethylsulfinylbenzimidazolesStomach DiseasesElectric ImpedanceRanitidineCoughSodium BicarbonateLansoprazoleHydrochloric AcidGastric EmptyingPressureVenous InsufficiencyGastrointestinal MotilityGastric MucosaStomach UlcerEsophageal NeoplasmsChest PainPostprandial PeriodSeverity of Illness IndexEndoscopy, GastrointestinalVaricose VeinsProspective StudiesTime FactorsGastric FundusGastric JuicePyloric AntrumEsophageal Sphincter, LowerDouble-Blind MethodLaryngitisCisaprideUltrasonography, Doppler, DuplexHelicobacter pyloriGastritisHelicobacter InfectionsHistamine H2 AntagonistsEndoscopy, Digestive SystemEsophageal StenosisGastrectomyEsomeprazoleAsthmaPopliteal VeinCase-Control StudiesDuodenumVaricose UlcerSaphenous VeinPylorusRisk FactorsEndoscopyRabeprazoleMetaplasiaStomach VolvulusStomach RuptureCardiaGastrinsFemoral VeinDeglutition DisordersDyspepsiaPostgastrectomy SyndromesIntubation, GastrointestinalGastrointestinal AgentsPostphlebitic SyndromeUrographyAnastomosis, Roux-en-YDigestive System