@misc{indiciae5248dc35d116,
  title = {Masks in surgery?},
  author = {G A Ayliffe},
  year = {1991},
  doi = {10.1016/0195-6701(91)90140-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/1680898/},
  note = {Source identifier: 1680898}
}