@misc{indiciaeebe225a8f233,
  title = {A simple technique for pulmonary function testing in patients with permanent tracheostomies.},
  author = {M S Benson and C K Carman and D J Pierson},
  year = {1986},
  url = {https://pubmed.ncbi.nlm.nih.gov/10315713/},
  note = {Source identifier: 10315713}
}