@misc{indiciaef5c4ad74b56d,
  title = {Test your lungs.},
  author = {T L Petty},
  year = {1976},
  doi = {10.1378/chest.70.4.450},
  url = {https://pubmed.ncbi.nlm.nih.gov/975947/},
  note = {Source identifier: 975947}
}