Bile RefluxBileBile Acids and SaltsDuodenogastric RefluxGastroesophageal RefluxPostgastrectomy SyndromesBile DuctsGastritisBarrett EsophagusEsophagusVesico-Ureteral RefluxAnastomosis, Roux-en-YBiliary Tract DiseasesManometryStomachGastric JuiceCommon Bile DuctEsophagitis, PepticGastric MucosaPyloric AntrumBile CanaliculiBilirubinBile PigmentsMetaplasiaBile Duct DiseasesLaryngopharyngeal RefluxDyspepsiaBile Ducts, IntrahepaticHelicobacter pyloriBile Duct NeoplasmsHelicobacter InfectionsBile Ducts, ExtrahepaticEsophageal pH Monitoring