@misc{indiciae04a207969899,
  title = {A factor analytic approach to an effective lung function screening protocol.},
  author = {S P Azen and W S Linn and J D Hackney and M P Jones},
  year = {1978},
  doi = {10.2105/ajph.68.1.49},
  url = {https://pubmed.ncbi.nlm.nih.gov/623361/},
  note = {Source identifier: 623361}
}