Eosinophilic EsophagitisEsophagitisEosinophiliaEsophagusEsophagitis, PepticEsophagoscopyDeglutition DisordersFood HypersensitivityDiet TherapyDilatationEosinophilsOral SpraysGastroesophageal RefluxMucous MembraneDiet, Gluten-FreeEndoscopy, Digestive SystemEsophageal StenosisEsophageal PerforationEsophageal Motility DisordersEosinophil Major Basic ProteinProton Pump InhibitorsBiopsyEndoscopy, GastrointestinalManometryInterleukin-5AbscessCeliac DiseaseHernia, HiatalRetrospective StudiesGlucocorticoids