@misc{indiciaefa3c69462bc3,
  title = {Ventilation during bronchoscopy.},
  author = {J M Collis and D W Bethune},
  year = {1972},
  doi = {10.1093/bja/44.8.906},
  url = {https://pubmed.ncbi.nlm.nih.gov/5083033/},
  note = {Source identifier: 5083033}
}