@misc{indiciae3caa3592a2a9,
  title = {Surgical masks.},
  author = {P L Pyeatt},
  year = {1997},
  doi = {10.1016/s0001-2092(06)63014-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/9012870/},
  note = {Source identifier: 9012870}
}