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Figure 1 Duration of Thienopyridine Exposure Prior to TTP Onset

(A) Thienopyridine-associated thrombotic thrombocytopenic purpura (TTP) onset: ticlopidine versus clopidogrel (p = 0.0016). (B) Thienopyridine-associated TTP onset: ADAMTS13 deficient versus ADAMTS13 nondeficient (p > 0.05).