@misc{indiciae922ead7e5a6c,
  title = {Pulmonary densitometry--what does it mean?},
  author = {M J Raphael and R E Steiner},
  year = {1969},
  url = {https://pubmed.ncbi.nlm.nih.gov/5788073/},
  note = {Source identifier: 5788073}
}