@misc{indiciae481ef9e0fdda,
  title = {COPD guidelines.},
  author = {E F Bowen and C F Rayner},
  year = {1999},
  doi = {10.1136/thx.54.7.655},
  url = {https://pubmed.ncbi.nlm.nih.gov/10438304/},
  note = {Source identifier: 10438304}
}