@misc{indiciae45abb6552537,
  title = {Letter: Quantitating left-to-right shunts.},
  author = {S Treves and D L Maltz},
  year = {1974},
  doi = {10.1161/01.cir.50.2.412-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/4846652/},
  note = {Source identifier: 4846652}
}