atrial fibrillation
CONCLUSIONS: In a large, contemporary cohort of ambulatory patients with        atrial fibrillation who received care within a health maintenance organization,       warfarin use was considerably higher than in other reported studies.
CONCLUSIONS: In a large, contemporary cohort of ambulatory  @OBJECT$   @PREDICAT$          @SUBJECT$  who received care within a health maintenance organization,       warfarin use was considerably higher than in other reported studies.