@misc{indiciae81d81d6433e6,
  title = {Tracheal agenesis.},
  author = {E L Effmann and T J Spackman and W E Berdon and J P Kuhn and J C Leonidas},
  year = {1975},
  doi = {10.2214/ajr.125.4.767},
  url = {https://pubmed.ncbi.nlm.nih.gov/1211507/},
  note = {Source identifier: 1211507}
}