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Mean international normalized ratio (INR), activated partial thromboplastin time (aPTT) and modified prothrombin time (mPT) values over time for day 1 to day 7. 
, 2.5 mg twice daily; 
, 5 mg twice daily; 
, 10 mg twice daily; 
, 25 mg twice daily; 
, 10 mg once daily; 
, 20 mg once daily; 
, pooled placebo
