@misc{indiciaeb39ef6a87c25,
  title = {Changes in reported pain from tension headaches.},
  author = {H Fichtler and R R Zimmermann},
  year = {1973},
  doi = {10.2466/pms.1973.36.3.712},
  url = {https://pubmed.ncbi.nlm.nih.gov/4704309/},
  note = {Source identifier: 4704309}
}