@misc{indiciae2e9a3a455cac,
  title = {The preoperative chest X-ray.},
  author = {I H Kerr},
  year = {1974},
  doi = {10.1093/bja/46.8.558},
  url = {https://pubmed.ncbi.nlm.nih.gov/4621286/},
  note = {Source identifier: 4621286}
}