Bile RefluxPeptic UlcerPeptic Ulcer HemorrhageDuodenogastric RefluxGastroesophageal RefluxBilePeptic Ulcer PerforationStomach UlcerDuodenal UlcerBile Acids and SaltsPostgastrectomy SyndromesGastritisHelicobacter pyloriHelicobacter InfectionsBarrett EsophagusDyspepsiaEsophagusStomachGastric MucosaVesico-Ureteral RefluxGastric JuiceAnastomosis, Roux-en-YLeg UlcerAnti-Ulcer AgentsBiliary Tract DiseasesManometryPressure UlcerBile DuctsPyloric AntrumSkin UlcerProton Pump InhibitorsEsophagitis, PepticOmeprazoleHemostasis, EndoscopicEndoscopy, GastrointestinalGastroscopyMetaplasiaEsophagitisAntacidsGastric AcidLaryngopharyngeal RefluxHistamine H2 AntagonistsBilirubin2-PyridinylmethylsulfinylbenzimidazolesHematemesisEsophageal pH Monitoring