The natural history in slow onset Crohn's disease and lack of early markers influences the delay to diagnosis.
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D000367:Age Factors; D015415:Biomarkers; D001799:Blood Sedimentation; D003093:Colitis, Ulcerative / Q000175:diagnosis; D003424:Crohn Disease / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D013997:Time Factors
D015415:Biomarkers