@misc{indiciaeeb2f97a2b03c,
  title = {Tension headache.},
  author = {D K Ziegler},
  year = {1978},
  doi = {10.1016/s0025-7125(16)31788-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/661420/},
  note = {Source identifier: 661420}
}