@misc{indiciae56e4d493dbe1,
  title = {X-ray-translucent retractors in spine surgery. Technical note.},
  author = {P Knöringer},
  year = {1986},
  doi = {10.3171/jns.1986.64.3.0520},
  url = {https://pubmed.ncbi.nlm.nih.gov/3950732/},
  note = {Source identifier: 3950732}
}