@misc{indiciae055d8833dead,
  title = {Three miniature lung ventilators.},
  author = {L W Hall and G M Massey},
  year = {1969},
  doi = {10.1136/vr.85.16.432},
  url = {https://pubmed.ncbi.nlm.nih.gov/4898758/},
  note = {Source identifier: 4898758}
}