Barrett EsophagusEsophagusEsophageal NeoplasmsMetaplasiaPrecancerous ConditionsAdenocarcinomaGenes, MCCCardiaGastroesophageal RefluxEndoscopy, GastrointestinalEpitheliumEsophagoscopyDisease ProgressionImmunohistochemistryEsophagogastric JunctionEsophagectomyMucous MembraneHernia, HiatalEsophageal DiseasesPharmacy AdministrationEpithelium, CornealEsophageal StenosisEndoscopy