@misc{indiciae924d84834b3e,
  title = {Challenging the airways.},
  author = {M Kattan},
  year = {1979},
  doi = {10.1056/nejm197909203011217},
  url = {https://pubmed.ncbi.nlm.nih.gov/471010/},
  note = {Source identifier: 471010}
}