@misc{indiciae4e98a23b65a9,
  title = {A proposed classification system for extraglottic airway devices.},
  author = {Joseph Brimacombe},
  year = {2004},
  doi = {10.1097/00000542-200408000-00054},
  url = {https://pubmed.ncbi.nlm.nih.gov/15277956/},
  note = {Source identifier: 15277956}
}