@misc{indiciae5168cb92e3da,
  title = {Understanding pain.},
  author = {M Swerdlow},
  year = {1971},
  doi = {10.1016/s0140-6736(71)92350-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/4104501/},
  note = {Source identifier: 4104501}
}