@misc{indiciae6d4e29b68006,
  title = {Bicycle helmets: effective protection.},
  author = {P Parkin and X Hu and L Spence and D Wesson},
  year = {1992},
  url = {https://pubmed.ncbi.nlm.nih.gov/1483209/},
  note = {Source identifier: 1483209}
}