@misc{indiciaec6e1899063b3,
  title = {Headache management program improves outcome for chronic headache.},
  author = {Linda H Harpole and Gregory P Samsa and Annette E Jurgelski and Janice L Shipley and Allan Bernstein and David B Matchar},
  doi = {10.1046/j.1526-4610.2003.03128.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/12890125/},
  note = {Source identifier: 12890125}
}