[No authors listed] The effect of low-dose warfarin on the risk of stroke in patients with nonrheumatic atrial fibrillation. The Boston Area Anticoagulation Trial for Atrial Fibrillation Investigators. N Engl J Med. 1990 Nov 29, 323(22), 1505-1511. [PMID]: 2233931.
Singer DE, Hughes RA, Gress DR, Sheehan MA, Oertel LB, Maraventano SW, Blewett DR, Rosner B, Kistler JP. The effect of aspirin on the risk of stroke in patients with nonrheumatic atrial fibrillation: The BAATAF Study. Am Heart J. 1992 Dec, 124(6), 1567-1573. [PMID]: 1462916.
Kistler JP, Singer DE, Millenson MM, Bauer KA, Gress DR, Barzegar S, Hughes RA, Sheehan MA, Maraventano SW, Oertel LB, et al. Effect of low-intensity warfarin anticoagulation on level of activity of the hemostatic system in patients with atrial fibrillation. BAATAF Investigators. Stroke. 1993 Sep, 24(9), 1360-1365. [PMID]: 8362431.