@misc{indiciae04991ac8b319,
  title = {Heel cushion on operating table.},
  author = {B Williams},
  year = {1971},
  doi = {10.1136/bmj.2.5752.47-d},
  url = {https://pubmed.ncbi.nlm.nih.gov/5550881/},
  note = {Source identifier: 5550881}
}