@misc{indiciaec73a0aabd153,
  title = {Cardiovascular function in the mammalian foetus.},
  author = {A M Rudolph and M A Heymann},
  year = {1973},
  url = {https://pubmed.ncbi.nlm.nih.gov/4149034/},
  note = {Source identifier: 4149034}
}