title: Upper gastrointestinal involvement in pediatric Crohn's disease.
authors.forename: Wael
authors.initials: W
authors.lastname: El-Matary
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D017668:Age of Onset; D000416:Alberta / Q000453:epidemiology; D002648:Child; D015331:Cohort Studies; D003424:Crohn Disease / Q000175:diagnosis* / Q000453:epidemiology*; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D011379:Prognosis; D018570:Risk Assessment; D012720:Severity of Illness Index; D017678:Sex Distribution; D041742:Upper Gastrointestinal Tract / Q000503:physiopathology*