@misc{indiciaef05e45ddc757,
  title = {Illness behavior and chronic headache.},
  author = {Stefan Demjen and Donald Bakal},
  year = {1981},
  doi = {10.1016/0304-3959(81)90197-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/7267138/},
  note = {Source identifier: 7267138}
}