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SOURCES: Chao TF, et al. Should atrial fibrillation patients with 1 additional risk factor of the CHA2DS2-VASc score (beyond sex) receive oral anticoagulation? J Am Coll Cardiol 2015;65:635–642; Calkins H. Data strengthen to support recommending anticoagulant therapy for all atrial fibrillation patients with a CHA2DS2-VASc score ≥ 1. J Am Coll Cardiol 2015;65:643–644.