@misc{indiciaef5b5a92afb5a,
  title = {Mattresses and fluoroscopy.},
  author = {N Couper and C Smith},
  year = {1982},
  doi = {10.1259/0007-1285-55-651-235},
  url = {https://pubmed.ncbi.nlm.nih.gov/7066626/},
  note = {Source identifier: 7066626}
}