MetaplasiaBarrett EsophagusGastric MucosaPrecancerous ConditionsGastritisGastritis, AtrophicStomach NeoplasmsCardiaHelicobacter pyloriHelicobacter InfectionsEsophagusStomachGastroscopyIntestinesEsophagoscopyMucin-2Esophagogastric JunctionMucin-6Pyloric AntrumBiopsyFibrous Dysplasia of BoneKeratin-7MucinsAdenocarcinomaGastroesophageal RefluxStomach DiseasesMucous MembraneStomach UlcerEsophageal NeoplasmsEndoscopy, GastrointestinalEctodermal DysplasiaKeratin-20Bronchopulmonary DysplasiaMucin 5ACGoblet CellsBone Diseases, DevelopmentalBile RefluxIntestinal NeoplasmsImmunohistochemistryPepsinogen AAtrophyUterine Cervical DysplasiaDyspepsiaFibromuscular DysplasiaPepsinogensGastric FundusOsteochondrodysplasiasEndoscopyIntestinal MucosaFibrous Dysplasia, MonostoticHomeodomain ProteinsDisease ProgressionDuodenal UlcerPacific StatesIntestinal DiseasesFibrous Dysplasia, PolyostoticCell Transformation, NeoplasticChief Cells, GastricEsophageal DiseasesEsophagitisPepsinogen CHip Dysplasia, CanineCleidocranial DysplasiaRetinal DysplasiaGastric JuiceEndoscopy, Digestive SystemTumor Markers, BiologicalCystitisHip Dislocation, CongenitalEpitheliumThanatophoric DysplasiaChronic DiseaseRisk FactorsPortugalPrimary MyelofibrosisGastrinsColombiaHistocytochemistryNarrow Band ImagingFollow-Up StudiesMucin-1Ectodermal Dysplasia 1, AnhidroticKi-67 AntigenHernia, HiatalKeratinsGastrointestinal NeoplasmsTumor Suppressor Protein p53Prospective StudiesPeptic UlcerImmunoenzyme TechniquesCarcinomaManometryArrhythmogenic Right Ventricular DysplasiaStaining and LabelingMalformations of Cortical DevelopmentRetrospective StudiesGerbillinaeDuodenitisSepto-Optic DysplasiaOssification, Heterotopic