a The Randomised Evaluation of Long-term
Anticoagulation Therapy.
b The Rivaroxaban Once Daily Oral Direct Factor Xa
Inhibition Compared With Vitamin K Antagonism for Prevention of Stroke
and Embolism Trial in Atrial Fibrillation.
c The Apixaban for the Prevention of Stroke in
Subjects With Atrial Fibrillation.
d Effective Anticoagulation With Factor Xa Next
Generation in Atrial Fibrillation.