@misc{indiciae6dfe7d3e8d80,
  title = {A chuck for extradural injections.},
  author = {B R SIMPSON and R H SALT},
  year = {1961},
  doi = {10.1093/bja/33.12.664},
  url = {https://pubmed.ncbi.nlm.nih.gov/13913201/},
  note = {Source identifier: 13913201}
}