@misc{indiciae57013c031349,
  title = {Caffeine as a risk factor for chronic daily headache: a population-based study.},
  author = {Ann I Scher and Walter F Stewart and Richard B Lipton},
  year = {2004},
  doi = {10.1212/01.wnl.0000145760.37852.ed},
  url = {https://pubmed.ncbi.nlm.nih.gov/15596744/},
  note = {Source identifier: 15596744}
}