EnoxaparinAnticoagulantsHeparinVenous ThromboembolismFactor XaHemorrhageFibrinolytic AgentsHeparin, Low-Molecular-WeightThromboembolismVenous ThrombosisInjections, SubcutaneousNadroparinPartial Thromboplastin TimeThiophenesAngina, UnstablePulmonary EmbolismDalteparinThrombophlebitisDouble-Blind MethodBlood CoagulationTreatment OutcomePlatelet Glycoprotein GPIIb-IIIa ComplexTolmetinPyridonesMyocardial InfarctionDrug Therapy, CombinationIntracranial Hemorrhage, TraumaticAntithrombinsPlatelet Aggregation Inhibitors