@misc{indiciae1127d3806c17,
  title = {Protection afforded by cycle helmets.},
  author = {R Keatinge and R Parry},
  year = {1994},
  doi = {10.1136/bmj.309.6966.1441a},
  url = {https://pubmed.ncbi.nlm.nih.gov/7819872/},
  note = {Source identifier: 7819872}
}