@misc{indiciaedd80e8064a14,
  title = {Pain: evolutionary background and primary stimulus.},
  author = {K M Stevens},
  year = {1981},
  doi = {10.1016/0306-9877(81)90020-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/7207281/},
  note = {Source identifier: 7207281}
}