@misc{indiciaedbbc1c53a6dd,
  title = {Simple respirator.},
  author = {P L MORTIMER},
  year = {1954},
  doi = {10.1111/j.1365-2044.1954.tb01931.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/13207703/},
  note = {Source identifier: 13207703}
}