@misc{indiciaeba21b9e63fa8,
  title = {Passive expiration as a test of lung function.},
  author = {K Ashutosh and J F Keighley},
  year = {1978},
  doi = {10.1136/thx.33.6.740},
  url = {https://pubmed.ncbi.nlm.nih.gov/371059/},
  note = {Source identifier: 371059}
}