Celiac DiseaseColitisGlutensColitis, UlcerativeGliadinDiet, Gluten-FreeTransglutaminasesReticulinIntestinal MucosaDermatitis HerpetiformisImmunoglobulin ADuodenumColitis, IschemicColitis, MicroscopicJejunumColitis, CollagenousHLA-DQ AntigensDextran SulfateBiopsyColonIntestine, SmallTrinitrobenzenesulfonic AcidAutoantibodiesCrohn DiseaseProlaminsAvena sativaColitis, LymphocyticInterleukin-18 Receptor beta SubunitDiet TherapyInflammatory Bowel DiseasesIgA DeficiencyHLA-DR3 AntigenAtrophyHLA-DR7 AntigenEndoscopy, GastrointestinalMesalamineMalabsorption SyndromesSerologic TestsLactuloseDiet, Protein-RestrictedWheat HypersensitivityImmunoglobulin GAntibodiesAutoimmune DiseasesDuodenoscopyCase-Control StudiesPrevalenceEnzyme-Linked Immunosorbent AssayDiarrheaSteatorrheaDuodenitisCapsule EndoscopyIntestinal DiseasesLymphoma, T-CellEnteritisEnterocytesIntestinesIntestinal NeoplasmsAdministration, RectalJejunal NeoplasmsGastrointestinal AgentsJejunal DiseasesEnteropathy-Associated T-Cell LymphomaIntestinal AbsorptionRectumColonoscopySwedenEndoscopy, Digestive System