Letter to the editor concerning Fritsche et al. Prevention of medication overuse in patients with migraine. Pain 2010;151:404-13.

@article{Haag2011LetterTT,
  title={Letter to the editor concerning Fritsche et al. Prevention of medication overuse in patients with migraine. Pain 2010;151:404-13.},
  author={Gunther Haag},
  journal={Pain},
  year={2011},
  volume={152 7},
  pages={1687-8; author reply 1688-9}
}