@misc{indiciae8c2d89a17235,
  title = {Universal breathing system?},
  author = {R J Coultas},
  year = {1989},
  doi = {10.1093/bja/63.3.366},
  url = {https://pubmed.ncbi.nlm.nih.gov/2803897/},
  note = {Source identifier: 2803897}
}