Venous Thromboembolism (VTE) Treatment Study in Japanese Deep Vein Thrombosis (DVT) Patients

Inclusion Criteria: * Men and women \>/= 20 years of age in patients with confirmed acute symptomatic proximal deep vein thrombosis (DVT) without symptomatic pulmonary embolism (PE) Exclusion Criteria: * Thrombectomy, insertion of a caval filter, or use of a fibrinolytic agent to treat the current episode of DVT * More than 48 hours pre-randomization treatment with therapeutic dosages of anti-coagulant treatment or more than a single dose of warfarin from the onset of the current episode of DVT to randomization * Calculated creatinine clearance (CLCR) \< 30 mL/min * Subjects with hepatic disease which is associated with coagulopathy leading to a clinically relevant bleeding risk * Active bleeding or high risk for bleeding contraindicating treatment with unfractioned Heparin (UFH) or warfarin * Systolic blood pressure \> 180 mmHg or diastolic blood pressure \> 110 mmHg