@misc{indiciae31d07a9f7667,
  title = {Observations and speculations on perfusion patterns in apparently normal lung scans.},
  author = {R H Secker-Walker and I S Gill and J E Ho},
  year = {1980},
  doi = {10.1159/000194278},
  url = {https://pubmed.ncbi.nlm.nih.gov/7221193/},
  note = {Source identifier: 7221193}
}