@misc{indiciae7808d9a3910a,
  title = {Preoperative pulmonary evaluation.},
  author = {J J Marx and N Punjabi and A Schwartz},
  year = {1999},
  doi = {10.1056/nejm199908193410815},
  url = {https://pubmed.ncbi.nlm.nih.gov/10475812/},
  note = {Source identifier: 10475812}
}