@misc{indiciaecd0a2f09a647,
  title = {Computerized spirometry using a portable microcomputer.},
  author = {D J Hansen and L W Whitehead and J A Foulke},
  year = {1985},
  doi = {10.1080/15298668591395003},
  url = {https://pubmed.ncbi.nlm.nih.gov/3880191/},
  note = {Source identifier: 3880191}
}