@misc{indiciaeac74cd4d63ea,
  title = {Pulmonary function testing. What is 'normal'?},
  author = {B E Pennock and J J Cottrell and R M Rogers},
  year = {1983},
  url = {https://pubmed.ncbi.nlm.nih.gov/6639231/},
  note = {Source identifier: 6639231}
}