@misc{indiciaea41ed9bf3d65,
  title = {Spirometry studies in patients awaiting surgery.},
  author = {J Gjessing and P J Tomlin},
  year = {1972},
  doi = {10.1111/j.1399-6576.1972.tb00577.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/4561320/},
  note = {Source identifier: 4561320}
}