@misc{indiciaef1925dea6488,
  title = {Letter: Estimating wasted ventilation.},
  author = {D H Atkin},
  year = {1975},
  doi = {10.1097/00000542-197507000-00035},
  url = {https://pubmed.ncbi.nlm.nih.gov/1147304/},
  note = {Source identifier: 1147304}
}