Diagnosis of Crohn's disease: a wolf in sheep's clothing.
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Lichtenstein
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D017668:Age of Onset; D003093:Colitis, Ulcerative / Q000175:diagnosis / Q000453:epidemiology; D003424:Crohn Disease / Q000175:diagnosis* / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D013997:Time Factors