ischemic stroke
BACKGROUND: Warfarin dramatically reduces the risk for ischemic stroke in       nonvalvular atrial fibrillation, but its use among ambulatory patients with       atrial fibrillation has not been widely studied.
BACKGROUND: Warfarin dramatically reduces the risk for  @SUBJECT$   @PREDICAT$        nonvalvular  @OBJECT$ , but its use among ambulatory patients with       atrial fibrillation has not been widely studied.