DUCCS I: Duke University Clinical Cardiology Studies
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þ 250 patients; 18-85 years old; within 12 hours; given APSAC, aspirin, beta
  blocker, nitrates; randomized to IV heparin or no heparin.

þ no difference in survival between arms of study; increased bleeding in
  heparin group (30% vs. 17.2%); 6-fold increase in life-threatening bleeding.