Warfarin in atrial fibrillation: underused in the elderly, often inappropriately used in the young.
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D000368:Aged; D000925:Anticoagulants / Q000627:therapeutic use*; D001241:Aspirin / Q000627:therapeutic use; D001281:Atrial Fibrillation / Q000188:drug therapy*; D005260:Female; D006801:Humans; D008297:Male; D018570:Risk Assessment; D020521:Stroke / Q000517:prevention & control*; D014859:Warfarin / Q000627:therapeutic use*
D000925:Anticoagulants; D014859:Warfarin; D001241:Aspirin