@misc{indiciaeef72d70b4889,
  title = {Air as a contrast agent.},
  author = {S Burton and N Bees and B Montgomery and H Massouh and A Rane},
  year = {1999},
  url = {https://pubmed.ncbi.nlm.nih.gov/10081885/},
  note = {Source identifier: 10081885}
}