drugs
OBJECTIVE: Appropriate use of drugs to prevent thromboembolism in patients with       atrial fibrillation (AF) involves comparing the patient's risk of stroke and risk       of hemorrhage.
OBJECTIVE: Appropriate use of  @SUBJECT$  to  @PREDICAT$   @OBJECT$  in patients with       atrial fibrillation (AF) involves comparing the patient's risk of stroke and risk       of hemorrhage.