Warfarin therapy for elderly persons with atrial fibrillation.

@article{Ackermann1998WarfarinTF,
  title={Warfarin therapy for elderly persons with atrial fibrillation.},
  author={Richard J Ackermann},
  journal={American family physician},
  year={1998},
  volume={58 1},
  pages={45-6, 48-9}
}