@misc{indiciaec8608faf1046,
  title = {Changes in measured spirometric indices. What is significant?},
  author = {B E Pennock and R M Rogers and D R McCaffree},
  year = {1981},
  doi = {10.1378/chest.80.1.97},
  url = {https://pubmed.ncbi.nlm.nih.gov/7249720/},
  note = {Source identifier: 7249720}
}